Would love to see different forms of final items in this game.
Itemization in league is so linear it's almost gut wrenching, With the exceptions of some outliers and niche builds. Build paths in this game are stagnant and needs a good kick in the ass to jump start some new build paths.
My idea of how to alleviate this is having items like 
could have 2 forms much like
or 
You could make something like "Zhonyas shield" which would build out of 
+
The passive on it would be much like 
in the fact that after getting to X amount of health you would gain a shield that only blocks physical damage. This would give mages an easier time not getting BTFO by a marksmen and not gimping them early game on mana by rushing
Likewise with make a new item called "Eternity's blade" build it from 
+
+
Keep the 250% crit damage, Lower the basic damage of the item to 50 but give it a unique passive like "After hitting an enemy champion with a damage dealing skill you're next auto attack will Ricochet to nearest enemy "Prioritizing champions" taking 75% of the damage from the primary shot and slowing them for 1.5 seconds rapidly decaying. And give it like a 20 or 30s cooldown.
Again these are just random ideas that obviously would not work in the game but the purpose of the discussion remains. It would be nice to have more itemization and not less.
