Most of the people who are against this time limit are looking at multi BLD with a very narrow mind. You guys have preconceived notions of what you take "3x3 multiple blindfold" to mean.
Even if we are going to have a time limit, 2:30 is completely arbitrary (it isn't a limit in any other memorization sport/event that I know of) and seems to be based just towards giving Tim the WR for as long as possible. Don't think I believe that Tim doesn't deserve to hold the WR, but placing the time limit so little above the current WR's time suggests that someone wants the WR to stay what it is for as long as possible and to discourage attempts with larger numbers of cubes. I might support an hour or something like that, but there is no reason to choose 2:30. Besides, if we move to a "most cubes in a certain amount of time" format we cannot transfer the old records through, so it's basically a new event entirely.
Incidentally, it's not like preconceived notions are always a bad thing, and there is definitely a difference between being stubborn about change and having a term defined in a specific way. For example I suppose you have a "preconceived notion" of what the "5x5x5 speedsolve" event means, and if I suggested we should replace it with "solve five 5x5 sliding puzzles as fast as you can" you'd be against it (and for good reason). Similarly, for many people "3x3x3 multiple blindfold" means a specific event with a specific goal, not just any blindfold event involving multiple 3x3x3s. If you want to create a totally new bld event, why not even bother to give it a new name?
This is a new sport, and multi BLD is an even newer event.
It's older than you think:
this site gives the first date as 1998, so you'd be changing the event (or rather creating a new, similar one) after ten years. Few WCA events have been kept track of for that long, and there are several official and legitimate memory sports that are significantly younger than this (this link is a subpage in the
"Memory and Mental Calculation World Records", so you can check that out). It's also interesting to note that one of their rules is that "For a record, all cubes must be fixed". If outside observers consider multibld a memory event, with the goal being to do as many cubes as possible with perfect accuracy, we should only change it if there is a very good reason why this doesn't work.
By the way, note that multibld must have started out as something outside of competitions, since their first four records were before Worlds '03. I still think we should go back to this. It might be cool to watch Rowe or Tim do huge numbers of cubes, but it's silly to make them miss hours of practice and events.
We as a community need to be open to some change, as we realize past mistakes and try to fix them (as we did with the score changes)
As we did with the score changes? I'd be interested to know, out of people who have done 5+ cubes multi in practice, how many believe the new points system is for the better. It might be more convenient now, and less stressful for the competitors, but I think few of us would call the past scoring a "mistake". Or maybe I'm wrong.