Blitzcrank in game health.

Why is their a champion that survives on one button alone. Two thing that come into my mind is blitz and trynd. You could probably remove their respective W,E,R and Q,W,E and replace with totally irrelvant spell like bard tunnel or smth and it probably wont make that much of a difference and still be viable. I feel like they need more in the kit than pressing one button and just jerking off or watching ur favorite netflix while team kills or ur auto attack feature takes care of the rest. I genuinely feel that every champion should have more interaction than oh here is what this champ is defined by and only by this. Take thresh for example, its much more "healthy" champion.