PSA: One which is extremely overlooked.
While it can be annoying in certain buggy moments, unit collision actually saves you vs champs who have power based on their location vs you like singed/fiora/urgot.
Example if there were no more unit collision, hugging the wall vs urgot/fiora and future champs who want you in a certain area around them will be impossible.
It's actually important to think about especially for certain duelist who might take phantom dancer vs a fiora in the game or wonder why kass/fizz got blown up so easily by urgot. It's minor but shouldn't be overlooked just because it's minor.