If it were up to me we'd get something more like Discoveryland, but that'll never happen, sadly.
I've always felt Tomorrowland is the most boring aspect visually of the Magic Kingdom, a shame really.
The purists would have heart attacks if "Tomorrowland's" name changed.
I think "Discoveryland" works a lot better, in terms of concept. You could then theme it with the steam punk Jules Verne stuff and allow all sorts of permanent things in there that would never have to be updated to keep it looking "Tomorrow".
But, then again, you could also just remake the whole thing like Buck Rogers-style and rebuild those original entrance pylons and it would always be "tomorrow", since the world is never going to look like that. The Discoveryland stuff feels more fun and accessible, though.
The chrome and white Buck Rogers future is cold to me...like walking around in a person's house who has all white carpeting and you are afraid to touch or spill anything. Not my idea of fun.
There are so many interesting things that could be done with "Discoveryland" though. It also fits better with the other lands, too...Fantasy...Adventure...Discovery...and then you have the historic looks back like Frontierland and Liberty Square.
Just the fact that we Disney fans can have a long and interesting discussion about what should be done with Tomorrowland sure indicates there are a lot of possibilities out there...and also that there really does need to be something done with this part of the parks. I've never seen any discussions about Adventureland or Frontierland as involved or lengthy as those about Tomorrowland.
It really seems to me like people want something done there, even if they don't know for sure WHAT they want to be done.
The longer I think on it the more I think "Discoveryland" grows on me...but I am still at the point where I would hate to see "Tomorrowland" go.