- People who get into the asset you were repairing
This one happens all the time. Spending almost 1 minute or how long it takes to repair an 88, just to have the guy who was waiting next to you get into it is annoying as fuck.
- People who are AFK but "waiting for a vehicle"
Happened quite a few times. The other night someone was standing next to a spawned vehicle. He wasn't moving for 30+ seconds, so I got in. Once I did that, he miraculously started moving and shooting at me for "stealing the vehicle he had been waiting for".
- People who occupy the gunner position (affecting AAA and AT guns) while you're driving to the front
Spamming the "bail out" VO command doesn't help. Parking the vehicle in an awkward, useless position to signal them to leave doesn't help. Telling them in the chat to please get out doesn't help. I understand that this one might clash with the whole teamwork spirit, but that's just how those two assets work (unless you're willing to use the AT gun as a really slow, non-armored tank).
The worst thing is that there's no way to deal with those people. You can't kill them as suggested above. Reporting doesn't work, because it's a "minor" infringement and hard to prove and frankly not worth the hassle of reporting (either on the server's forums or directly in the game). Complaining about it also makes you sound like a petty person, so you just can't win.