This thread has been fun to read, here are my thoughts on various points:
Bigger fields - I think this would impose too much additional work on teams and EPs to be feasible. As others have mentioned, lots of VEXU teams do skills runs at HS/MS events, which would not be possible if the field sizes/layouts were different. Bigger fields would also make it more difficult for EPs (most of whom already run HS/MS events) to host VEXU events. The WV VEXU qualifier (consistently one of the world’s largest VEXU events) is super easy to organize because it’s held the day before our VRC states, so basically all we have to do is set up everything a day earlier. That event would be significantly harder to put together if the field size/layout were different.
More electronics freedom - I think this would be really cool. I would love it if VEXU teams could use more-powerful VEXPro motors in applications where they’re useful, and even lighter IQ motors in places where you don’t need all the power of a V5 motor. For various reasons, however, I think this is unlikely to happen given the current robot and match control hardware.
Worlds conflicts with college finals - In addition to being inconvenient for many VEXU teams, this is also inconvenient for me as a volunteer. This year I got home from Worlds at 8:00 PM on Tuesday, then had an exam at 10:00 AM on Wednesday, which was definitely not ideal.
Pushing only VEXU Worlds back a couple of weeks does not solve my problem, and poses new cost and logistical problems as already discussed. I would instead be happier if they pushed the whole event back 2 weeks, to early/mid-May. At this point, most college students are done with finals, but most schools in the US are still in session.