I played this custom map called "Assassins", and it was one of the best things I ever played, I'm not exaggerating. Idk if something similar already existed, or if it came out from SC2, but I was really hoping for someone to make a real game based on it. Everything I can find on the internet is just this one yt video, but it's an older version, I didn't play under 3.0 I think - https://www.youtube.com/watch?v=TX4hpQouvKA