A more 3-D field. 2004 with the chin-up bar and the steps was cool. Even if we just had a grid of 2x4's across the middle 10 feet of the field it would force teams to develop a way of crossing no man's land. (Walker bots anyone?)
A reason to change robot orientation (I mean similar to flop bots but on command instead of only once)
No More Bumpers
CAN utilization on the Jaguars.
No more penalization for excellence.
Multiple game pieces. ex, Red alliance has to score tetras, Blue Alliance has to score Bins. Green Alliance has to score soccer balls. Force teams to come up with multiple manipulators in a year or a very general purpose one.
Three 2 team alliances. We seem stuck on 2 teams, mix it up a little. This won't change the number of matches at all for eliminations, just instead of 8 alliances we have 12 but only 1 pick each. (Serpentine debate ENDED!)
A game piece that is readily available and not too expensive.
No more exotic flooring, stick with carpet, most teams already have carpet to practice on.
Less reliance on a single supplier to provide the wheels.
Breakout boards for the CRIO that don't look like they will explode if a dog sneezes.
Driver stations that are reliable.
No judgment calls for refs or inspectors. (G22 was, in my opinion, up to the discretion of the refs entirely)
No more attempts at "leveling the playing field"
More support for struggling veteran teams instead of the constant mantra of "Start new teams" we need one of "Support the existing base"
I might come up with more later but for now I would say I have a short list
