Im not too impressed with it atm. It seems that it doesn't require anywhere near as much skill as BF2 i..eits a lot easier.
It we look at the vehicles:
You have 2 air vehicles, 1 is the equivilent of an attack helicopter, the other the equivilent of a transport helicopter. There isnt any sort of plane in the game.
I am a rubbish pilot, my mates laugh at me all the tiem when i try to pilot any of the air vehicles in BF2 they need at least some skill to pull off and master. The ones in BF2142 however don't require any. I can happily fly these for ages and not crash them or even come close. Which tbh i am dissappointed in as trying to master the vehicles was an appealing side to BF2.
The land vehicles in 2142 move a lot faster (hover or rocket booster) and some even have a missile defence field.
Jumping out of vehicles is a lot easier as you auto descend in a protective drop prob that gives you some armor for protection and gets you to the ground a lot easier.
The class system though i do like, there are less classes in 2142, 4 iirc (recon, assault, engineer and support) however, you can customise these classes. While the level of customisation is nothing when compared to say Tribes it is a nice feature.
The graphics do look very good and the game performs reasonably well. The server browser seems more responsive than in BF2 however it still updates everytime which will take foreve like with bf2 when it goes retail.
All in all i think it is a polished mod that is coming along very nicely. I would prefere another air vehicle and for the existing air vehicles to be harder to fly. But, the idea of Titans i really like, infact i had a similar idea of this when BF2 first came out so im particulary happy it has occured.