i was thinking for a while (dangerous i know.) and i thought of 2 things that could be added to the game.
the first is a special mtf unit that can spawn.
MTF Eta-10 ("See No Evil")
HP-150 (no regen)
longer blink timer
now i get that it does sound a bit weird to add but think about it. there could be a 966 in the round?
the second is a non playable scp
Scp-012 A Bad Composition
Spawns in its containment room.
when around it for more then 10 seconds you die.
Reason for wanting it added "To punish the nerds who hide in there."
Those are my suggestions.