Riot should clean slate the items
And runes. I feel like champions kits that are inherently weak or over powered are being muddied by items that are too strong, do too much and are too necessary every match.
I definitely feel that the items have gotten stronger with crazier abilities compared to 4 years ago. Now everything is so dependent you cant change an item without unbalancing a champion, and you cant change a champion without unbalancing an item in some cases.
Would probably be much easier to balance the game, if across the board, items represented a smaller percentage of a champions potential power, so when the item changes, the impact is smaller and more manageable.