This game is not Tribes2. If the only thing you liked about Tribes2 was the defense-oriennted structure coupled with stealth and a slower paced game, then you may not like this game.
Nor is this game Tribes1.
This game is a compilation of Tribes1 and Tribes2 into a marble-cake blend where the fast-paced action of Tribes1 is brought back while not totaly alienating Tribes2 players as certain aspects like vehicles and slower-paced weapons were brought in as well. The game is a sequal, not a photo-copy.
IMO it's better than Tribes2 and could inevitably become better than Tribes1 was. The only thing that is holding it back now, and one reason why I think it's so offense-oriented, is because this is the first time people have gotten to play... and teh first time, all you want to do is jump in and blow shit up. That will fade with time and I believe a structure will arise.