blitzcrank, lets talk about him
so, we all know about blitzcrank. everyone here has been instantly blown up after gettng pulled into the enemy team. everyone has had this happen to them. but, besides that, what else does he have that is relevant to his team? nothing. there are two other champs with hooks that are played support, these are nautilus and thresh. however, both of these champs have other sources of relevancy. Naut still has 3 other cc abilities, and thresh still has flay and a lantern. blitz rocket grab costs 100 mana, and has a long cooldown, meaning if he misses it, he's useless until it's back up again. thresh death sentence costs 80 mana, and the cooldown is very similar to blitz, although if he does land it, the cooldown is reduced. naut dredge line costs 60 mana, and out of the three mentioned, it has the fastest projectile speed, and it pulls naut and the target together.
blitzcrank has a knockup, yes, but it's melee range. he also has a silence, but its range isnt great.
basically, blitz is a bad champ. he is completely useless when his grab is on cooldown. unless he gets a rework for some reason, he will always stay this way.