I don't disagree. Our crew works at keeping a good pace. If we're running this long, others are too.
One of our 3 hour games was 70-62. I'm not sure any rule change would've helped that.
I won't argue that some games are going too long, but in my neck of the woods I feel rule changes to shorten games disproportionally affect games that are already short and not have an effect on the causes that make games too long.
Games that I've had that are excessively long fall into three categories:
1) 70-62 games where there's a ton of untimed try downs and 1 minute intermissions between kickoffs.
2) Pass heavy offenses without a good QB (or receiver corps) resulting in many incomplete passes.
3) Many/major administrative stoppages, whether it's injuries, penalties or weather.
The only one of those that can really be addressed with a rule change is having some weird hybrid clock stoppage on an incomplete pass (like, the game clock restarts when the play clock hits 25, or something like that ... no idea if that's a good idea, just spitballing something).
Rule changes about not stopping the clock after a first down, or restarting it after going OOB aren't going to shorten the really long games because the delays that make them really long aren't affected by that timing rule.
I'm also not a fan of changing the timing rules under 2 minutes because most clock operators in my area are volunteer parents, not officials. I'd be expecting an inconsistent application of the rules, to state it mildly (as is also seen with the 40/25 play clocks as well, which are *never* officials if it's a visible clock).