Riot, Blizzard did something you should actually try.
Blizzard was adding cards to its new expansion and had players vote on which ones they wanted.
Do the same for items when it comes to updates. Throw your craziest ideas, have players vote, work on the concepts. Why have 8 minds work on items when millions could?
EDIT: This is not for balance, this is merely adding stuff to the game that the PLAYERS have fun with. Blizzard doesn't balance the game around what their players say, they analyze it and nerf things accordingly. Blizzard was adding a fun new expansion to the game, and the players decided what they liked best. That's what makes it FUN.

