I concur, and would not even grant adjustments for delays or increments of 15 seconds or more.
Players who insist on using analog clocks, which have not been standard equipment for two decades, forfeit the benefit of any delay or increment, and are entitled to no adjustment to compensate for the shortcomings of the nonstandard equipment they insist on using. It’s well past time to buy a new clock.
And even then the adjustment could be small, e.g. half the excess over 15 seconds. For example, G/60 inc/30 could become G/67.5 d0.
Also, since the announced control is inc/30, require scorekeeping all the way to the end of the game even with an analog clock. 
Bill Smythe
Slightly off topic, but –
You might want to consider d/9 instead of d/10. This would increase the number of setting options on some Chronos models.
Bill Smythe
I think 5 second delay leads to too much clock bashing. I wouldn’t mind seeing 10 second delay become the norm for shorter time control tournaments (perhaps for time controls between G/30-G/60) and 15 second delay become the norm for longer time control tournaments. I don’t understand why the “standard” is for delay to be very short at 5 seconds but increment to be long at 30 seconds.
Every five seconds of delay means knocking five minutes off the base time to keep a quick time control tournament on a reasonable schedule. For a modest-sized tournament, you can run G/60;d5 with 2.5 hours between rounds. There’s almost no chance that you could do that at G/60;d10, so you would probably change that to G/55;d10, or go to 3.0 hours between rounds. You might find that your players prefer neither of those.
Increment vs delay is apples and oranges. Increment will generally have a much shorter base time and enforces a particular “strategy” for time handling. A tournament aiming for roughly two hour playing time per round would probably be G/30 with a 30 second increment, and I doubt very many people would be happy with that.
Why has it become “standard” to have either:
a longer base time and short delay
a shorter base time and long increment
What’s wrong with a shorter base time and long delay?
In general, people prefer longer base time (as it gives you more flexibility in time management). In the end, it won’t really be your decision. If you try some non-standard time control and people don’t like it, they might not come back to your tournament. If you want to experiment, let people know that it’s an experiment and that you’re interested in their feedback. And if they don’t like it, respect their opinion.
Inevitably, a lot of people get into time pressure no matter what the time control is. This is why I am in favor of a longer delay. We will be experimenting at our “Quad 45” tournament (pdxchess.org) by making the time control G/45;d10 over the current G/45;d5. We’ve asked for feedback and it’s generally been positive.
That’s not really going to tell you how people will react to either shaving 5 minutes off the base time, or spreading the day out by adding more time between rounds. Of course you would expect people to prefer G45;d10 to G45;d5. But what you can do for an ASAP set of quads it not necessarily an option for a 4 round Swiss.
Several organizer/TD friends of mine and I have had the debate about how to measure and judge what exactly the time controls in terms of delay/increment people are most interested in, whether it be 5sec delay, 10sec delay, 30 sec increment, whatever.
Now, I do believe that there are many who are strongly on one side of the fence or the other in regard to increment/delay, but really have not met many with the choice o 5 sec or 10 sec delay makes that big a difference. What is more important to them is the base time control.
Micah mentioned CCA at the start of this thread. It was amazing to me to see several players get into serious time control problems even with the 4 day schedule
at the SW Classic in Fort Worth, Texas. It seemed to me that G/150-40 moves, SD/30, 10 sec delay would be more than sufficient. But, for some it clearly was not enough.
I applaud CCA for offering a variety of time controls-- with the realization that one size does not fit all.
Given the infrequency of G/10 events, however, really getting a gauge of the popularity of this time control v 5 second delay may be rather difficult.
Rob Jones
The slow time control at the Southwest Class Championships was actually 40/110, SD/30, d10.
I’ve lost track of the number of times I’ve seen confusion between 1:50 and 150 minutes, or 1:10 and 110 minutes.
One of the first events that I played in with a significantly long time control had it listed something like:
40/110, SD/1, d/5.
Not having enough experience in the various time controls, I was understandably confused as to what it meant and asked the organizer to clarify it for me. I was pretty sure that SD/1 did not mean only 1 minute at least. 
As I understand it, “SD 1” is no longer considered a valid way to write a tournament spec. It should now be in minutes for a main control, and in seconds for increment or delay. Thus, “SD 60” would be the correct way to write this now.
Bill Smythe
I run a monthly G/45 tournament that now uses 10 second delay. There has been confusion on how to set the longer Chronos clock for 10 second delay (and one of the ways you can set it for ten second delay does not show the delay countdown. The colons only flash during the delay). Therefore, I am going to write instructions on the best way to set the longer Chronos for ten second delay. I also have a number of the blue saitek clocks but those are easy to set for 10 second delay.
I am not familiar with any of the other popular digital clocks. Are any of them (including the shorter Chronos) tricky to set for 10 second delay and worthy of having instructions?
What do you use for the long chronos? I use AN-# where # is the number of time controls. I dont like the flashing colons… 
Short chronos = tn-2
Zmart = delay F 10
DGT, NA = it is not the first time you see “seconds” but the second time that is the “delay”
Excalibur/GameTimer = user manual settings
Let me know which clocks because my eyes giving up on me.
Best,
Acerook
To clarify, the delay isn’t what requires user manual settings (U1 to U5). Generally the reason for user manual settings is that the base time isn’t one of the dozens of pre-sets. G/60;d10 uses a standard preset (for the base time) and then setting the delay seconds.
I use the “An-1” setting on the Chronos to set it for G/45;d10. I don’t like the flashing colons either. I came across this very nice and handy explanation on how to set many popular digital clocks for G/60;d5, metrowestchess.org/Community … -01-30.pdf, but was surprised to see for the longer Chronos, it shows how to set it with the colons flashing instead of showing the delay countdown.
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Yup.
There is a lot of uncertainty of exactly how much time one has with long delay since the delay stops when ones moves. In increment one can gain time with meaningless moves - one sees that sometimes with what almost looks like cooperation between players (and probably is). FIDE time standards provide for minimum think times based on a 60 move standard so G90 i30 guarantees a two hour game if it lasts 60 moves. Of course it can go longer. But G90 d30 does not guarantee 2 hours based on 60 moves. D and I of the same duration with the same base time generally results in a shorter game using delay but one doesn’t know how much shorter. In my experience players do not like that uncertainty. And once they get used to increment higher skilled players seem to prefer it. Lower level players - especially younger scholastic players - it hardly matters except as an issue with training - and with the TD getting asked how to set the clock!