Heed I like your tdm.
The weps are difficult to use for those who arent familoar to them, as in, i pick up a smg but i have no idea if its better than another smg or a shotgun. this is why people stick with rocket launchers and grenade launchers and grenades; easy one hit kill that doesnt take much getting used to.
The vehicles have pros and cons, but i didnt find the tank to be too overpowered. while it is frusterating to have a tank pull up out of nowhere and kill you, its not a fortress. a few rockets or headshots can take it out. the AA turret is a bit annoying but i wouldnt remove it.
Also, the capture points are easy to cap and easy to lose. it takes like 8 seconds to cap. central could have 6 red players roaming around, but a blue could slip onto the cap point and get it quickly. most of the time, people are going, alone, around in vehicles to each point and hopping out, capping, hopping back in and going to the next point. i suggest you put a message to everyone that says "Blue is capping Bunker!" so that you dont have those moments where you cap the cave, hop in the tank, and find out the other team re-capped it immediately afterwards.
Also, when blue caps all the points and "red is open to seige!", everybody takes off in planes to try to cap red base. meanwhile, one red guy in a plane flies off and caps south point, halting everything. its annoying...
Its the best tdm around but id give it a 7/10. it IS fun to play, regardless