It is not playable with the bad behaviour of so many players.
More than 80% of my battles at 3.7-5.0 players kill each other or crash into each other at takeoff.
I think it is recommendable to give these players a defined ban time instantly.
Teamkilling at takeoff never happens by accident.
And those players aren’t able to focus on takeoff 20sec deserve it too.
But before you have to fix the bug a victim of crashing gets the teamkill. ;-)