Some things you feel are missing from a champions kit?

For me as a Sion main i feel he misses something

Namely some form of tank steroid, Really miss his old feel no pain passive which did make him more tanky then he is now, the rng element was just bad but something akin to it would be nice

Perhaps something like the current dorans shield passive but then scaling of his health Can keep the old name feel no pain, be attached to the ult and block 1/2/3 % of his missing health

anyone else feel like they miss something in a champions kit