General - I hope the name would be UT3. It will give the game a feel of a big first-person shooter, instead of just a yearly tournament.
Vehicles - 18 vehicles... *drools*. Sounds ballistic. The vehicles I'd want to see back with the Scorpion and Goliath are the Raptor, Manta and Leviathan. If there are 9 'Axon' vehicles, that will leave room for the Hellbender, Cicada, SPMA (ick), and Paladin too.
Weapons - I'm happy to see the enforcers are back! Gonna be much better than the crappy AR. The Stinger and Canister Gun sound cool.
However, I'm a bit disappointed of the lack of the Minigun and the Bio-Rifle. The Mine Layer too, it gave some character to the onslaught gametype.
I also hoped they'd implement the old/new razorjack/ripper/ripjack.
Teams - You can see pretty clearly here that they've listened to the community. Many old teams make comebacks, and there's a nice conglomeration of races.
I'd like to see the Gen Mo'Kai and Skaarj too though. It seems as if they neglected UT03/04's races a bit. Including some robot-style (not cybernetic) characters in The Corrupt would be nice.
Overall, it seems like Epic is trying to make this game more similar to the old UT and implement the best elements of the latter games simultaneously. In my opinion, this is a recipe for success, and by far this game looks AMAZING.
HepaB