Tahm Kench
Why not just figure out what you want him to do, and focus on changes to his kit that will allow him to perform well there, rather than buff him to the point where he can 1v1 easily with a Warmogs. He's such a weird abomination, not good, but better in jungle or top lane than as a support. Usually doesn't win but is annoying and has absurd damage for no reason.
are champions he can't exactly burst down.
are champions he can beat up due to their squishyness.