Can we ditch MMR based matchmaking in Low ELO?

Or at the very least match up each lane by MMR? It's really depressing to stomp your lane and still be unable to carry because 2 or more enemies got beneficial matchups against your lowest MMR players and fed to high heaven. I don't even blame the players here. Sure they're feeding, but the game puts them in a situation where they're likely going to feed.

I know roles get swapped sometimes, but it's a pretty rare thing in low elo for someone to give their role up so I don't see that ruining the MMR too often.

A large majority of the playerbase is low elo, so the skill differences between them can be pretty staggering and it makes climbing a dreadful experience. I'm not even sure if this idea would fix it, but certainly someone can think of something that would.