kassadin (mid/jungle)
why not make kassadins passive and his absorb shield be for all damage instead of just magic damage. so that he can be played against AD champs like yas etc. as well as be better at jungleing. if the dmg reduction and absorb shield helped him survive better against the jungle mobs he could clear for longer without having to back quite as much and thus be more on par with other junglers. its not his dmg its his squishiness that makes jungling harder on him.
i think the idea behind kassadin being and anti magic type champion comes from back before AD mid laners were a thing. but times have changed and so should he. kassadin is just a fun champion to play. even when hes not OP broken with his silence. he still fun. hes just counter picked to easy, or is only picked as a counter pick against certain champs.