I was in beta as well, my thoughts are the same as the others for the most part.
It's really fun, and great, but it gets boring too fast strangely. I would have expected more time to enjoy it.
You rarely worked alone, which meant trying to find a group, waiting for everyone to get to your position, and get on the transport. Then you had to travel there, and at times it was nearly a stalemate battle inside of bases.
The vehicles are great, but for the most part I found them to not be that useful except the planes. When you tried to capture something, you had to be inside of the building to do so, and that meant leaving the vehicle. They had mobile armor suits (max's) that couldn't hack the base, but killed any ground unit not wearing a max basically, as well as taking out vehicles sometimes.
It could be extremely fun, and you may enjoy it, but for the most part I wouldn't expect more than a few months at most.