You didn't really explain anything about your suggestion. But we used to have a way to go back to the character select menu, rather than world select but it didn't work well and caused performance issues.
So it was removed rather than having it cause problems.
That's why they talk to people suspected of doing that, because if they really are weighing it down and are afk, they won't be able to respond to the GM. The thing is though, that a GM has to actually be there talking to them to get them banned (because otherwise there's no way to know for certain they actually were weighing the key down just from a video or image). Unfortunately the GM has to have been investigating them while they were doing it to really know if they should be banned.
Anyway OT I don't like it that much, but mostly because its new and stuff looks different. I'm sure in a few weeks we will prefer this new UI to the old one
Yet again gamechanger strikes with not liking a change to the game. What are you?