Again, if you are dumb enough to be killed by some guy in your own base..over and over, then perhaps you need to try super mario. I would also suggest wearing a helmet for the remainder of your real life.
You cant "freely move and spawn and in the enemy base", did you read the garbage you...
This scenario would happen 1 single time to anyone with at least 2 brain cells.
First time, it caught you off guard, now you know. If you are dumb enough to spawn in the exact same vehicle(i assume instant vehicle now) then you deserve to be farmed.
If ANY enemy is in your base and killing...
If only there was a way to destroy helicopters. Maybe like a class that has rpg's and heat seeking missiles, that would be awesome. Maybe even if they added some kind of specific vehicle to deal with air threats.. Or maybe even simply 3d spot it and let the ai AA gun take it out in 3 seconds...
The os was out for a year before it was officially released and has very easily proven itself, and has double stamped that after its release. It's better in every single way, and it's free :)