New Matchmaking Gametypes

My first idea is for the return of Invasion. My next idea is deathball which would be grifball except if you hold the ball for more then ten seconds you die. My final idea is rocket race which is when teams of three get into a rocket hog and they race. Everyone spawns with rockets. If you think these are good ideas for 343, then vote in the poll yes. Also, add your ideas below.