Being up 5 solos against a 3-man premade with MMR advantage STILL sucks.
I don't think it's fair when MMR both gives one team a 3-man premade AND stacks higher MMR on that side against the other team. If Dynamic Queue is meant to stack the odds so a 5-solo team can win 50/50 against a 3-man premade 2-solo team, then it needs to stop putting the higher MMR players on the premade team. It's a serious flaw, Riot.
I get that League is more fun with friends, but it's not fun when it's at the expense of those of us who want to play without the hassle of socialising. I didn't play Ranked for all the competition and whatnot primarily; I played it because it placed me on level playing ground with my opponents.
Now, there's no place where I can escape the 3+ premades. And no place where I can make friends to premade with either.
I'm unhappy, Riot.