Unit collision is pointless.
It's such an unfair mechanic that can basically make or break a fight, assuming there are minions involved. Makes you feel like you didn't get outplayed, but rather, that the game decided you should lose the fight for literally no reason. Oh, and there are SOME CHAMPIONS that can ignore unit collision, but most can't. Why is this even in the game? Someone should explain it to me, because I have no clue. Remove unit collision (or minion block) and rework some champions' passives like Fizz. Oh wow, ghost can make you move through units? I guess I'll take ghost the next time I'm diving someone and I need to run through my minions after killing them because the game will make me path around them and get killed by tower. Unit collision is so stupid.