Okay i have a few ideas.

1. Death match game mode/gun game. I think it would be nice addition to make the platform even bigger for those who like that.

2. Battleship game mode. It would be so cool to have 2 battleships fighting where you man the ships, steer, repair, arm the guns and maybe even sneak on the others boat. And also you could spawn in jets maybe. That would be so cool.

3. A kind of trenches king of the hill map. Where you could dig your own tunnels and progress onto the map to claim spots (kinda like rush)
   Maybe with some older weapons in this game mode.

I think that the more gamemodes and all kind of features could help the platform grow and make it a really cool game for everybody!