343 industries
i say you make a new game called halo costume including everything you need to forge any map
-a world generator so we don't need to use templates such as forge island/world
-a vehicle generator to costume build special vehicles if not a generator at least a way to remove weapons from citron vehicles
-a weapon modifier
-a turret modifier replace the normal machine gun and pea shooter with any weapon you want
-only multi player
-the ability to move maps to any future games
-the ability to create your own campaign levels
-the ability to place your own enemies on a map e.g. enemy spawn point
-a boos generator to build and create bosses
-and last and most important
the ability to retexture blocks to make different environments