I'd like to add on to this with one other map that comes to mind when teamspawns come up, and that's MMKENK.
All things considered, MMKENK is a completely fine map, outside of the fact that (I believe) Light Team spawns right next to a teleporter that leads directly into the back of Wily Team's spawn. This causes games with teamspawns to basically devolve entirely at round start, as Light Team pours into Wily's Backline, while they have to scramble to figure out counterplay.
Really the only thing I'd do is move the teamspawns around so either
A. Dr. Light Team no longer spawns near that teleporter entrance.
B. Dr. Wily Team no longer spawns in front of the exit.
Thank you for listening, as I do wish to improve this game as much as possible. I'll come back if I can find any other funky instances of team spawns.