A Collection of Piggy[ALPHA] Theories

New Gamemode Theories
People always wondered what the next mode was going to be added. There was some likely candidates, and turns out infection and traitor went into the game, however people would assume some modes, or maybe think up some, like a murder mystery, a defensive tower defense or more. None of these made it, however, what would your opinion be if a new mode came out, and what could it be?