Every class in the game needs more Variety,i remember playing Dota when i was younger and Heroes of Newerth a little latter,you could literally build so many different things on any of the champs,and every item felt very special and very strong,those that played know,there were items that make you Windwalk(instant invis and bonus damage on next attack,like a mini rengar ult),then there was an item that when activated gives you 2 clones of yourself,you could deal a lot of damage while also having the chance that an enemy will kill your illussions first giving you even more time to kill him.
Items that gave you the ability to push or pull someone,to put them in a cyclone,to silence or stun an enemy,hell,there were items that cost health to use that you could use to kill yourself and Deny your enemy the gold.
League on the other hand is more of a stat check game,its not about how you use the items,its about how many items you have,still i love LoL more,but the items really need variety