No one can see anything ONLY if the traitors activate Terrorception. But other than that, there's no problem with the entire map. Personally, I like the map because of the spectator room. UNBREAKABLE WATERMELONS!
Whenever I get T on that map, the first thing I buy is the radar. Leave the Terrorception for other Ts if they want to activate it.
I have mixed feelings about this map. I don't do very well on it, but It is a different map from what we currently have. The fact that's different from the regular maps makes it special, so for that reason I'm more inclined to say we should keep it in the rotation for a longer period.
personally, i think terrorception would be better off as an RP map, but melon heaven makes up for all the problems with the map.