I've talked a lot with people all around the game about cool features AoS should have, and I've generated a short list:
-Throwing back enemy grenades (Once a player from an opposing team has thrown a grenade at you, if within a 1 block radius, the player can throw the grenade back)
-Throw-able melee weapons (such as a knife or a tomahawk)
-Leaderboard (to see who has the most kills in all of AoS and to compare with your kill count)
-Quickmatch (for if you just want to battle random people in a small 2v2 or 1v1 fight)
-Ammo Dumps (when you shoot an ammo dump, it will explode, covering the same damage radius as a grenade, and also destroying blocks [if possible])