Slayer, I have a good idea for another gamemode.
Jailbreak.
Everytime you kill someone on the other team, they go to your jail. The other team can try to break them out by many ways. (Mainly events, but you could have some bricks too) Then, you could execute the people you jailed! When you do that, those players don't respawn anymore until the next round. Now this would have to have limits, like jail a specific amount of people or get so many points. You could also have capture the flag as an option in this. Capturing the flag would also free your teammates.