One Event that I would love to have is a cruiser ship event. Like everyone in the event would get into one single MASSIVE ship that is like the humans cruiser and everyone on board would command over a different gun. And there would be different guns so if a player that normally flys a tank gets into an assault gun then they would have blasters, rockets, aim computers, perforators and thermoblast. And then there would be the pilot of course who commands over special stuff like Protector and repair because an engineer class turret wouldn't make a very good turret. There should be maybe only stun and assault turrets cause they have the more offensive abilities than tank and engineer. Also the turrets shouldn't be able to be shoot on. The Mantis can only shot on the actual ship and all turrets would show the health on the entire ship.
Now for the second part, there could be 2 options for this. 1 is the ship pitted against an enormous amount of Mantis, this ship would have even more health than the mantis destroyers cause we're supposed to win ^^. 2 is that there is a limit of how many can get into the ship say maybe 10 people and then that ship would be pitted against loads of other players. This would put the big ship in the losing position though as it's more of a survival rather than a "get-through-the-mantis" kinda event, as players will just come back to try it again while the mantis will be destroyed. You could of course have a survival with the mantis too seeing as they are innumerable.
Hope you can make this cause it would be awesome fun ^^