The problem with League's itemization......

They only empower you

no reasons to pick them in a situation (except in some situation). only mages? take mr. only ad? take armor and what's wrong? with this philosophie where items don't have A GODMAN GOOD ACTIVE if item A JUST surpass another item B there are absolutely no reasons to pick item B. So you need to put more actives into items and reduce the stats they give

example of what an item can bring with an active:

- active: execute a creep and grants 30 bonus gold 60 seconds cd - active restaure 15% of your mana - active for 3.5 seconds heals for 20% of the damage taken active: disable the passive to give to your allies in a 600 radius the magic shield