LP also needs one of these two things:

3) a state system like potd:. You can register two teams and you have rankings with both of those teams, if you play with other people than those teams you have to delete the state and you lose your ranking

Or

3) Only gain points based on individual rating and not team rating. IE a plat would only gain +5 points while playing with a bunch of silvers who are getting +20 points. This would make it way harder to boost compared to the current state of LP.

Right now, being in a "light party" is worse than just being a solo player that plays with unranked alts. You shouldn't be punished for playing the game mode as intended.

I also think the time restrictions they talked about way back in 3.2 need to be added to LP. The queue should only be open a few hours a day unless the population greatly increases.