I would like to suggest bringing snipe box back? It was so much fun and i think it would be nice to have back
A publicly locked chest at spawn, in which anyone can throw anything in the chest, or grab stuff out of. You can host games where you put in valuable items in the chest and people try to grab it first.
It crashed the server. It was awesome, yes, but with 200+ players all in one chunk, you have to acknowledge the fact those players won't be around too long.