I'm on the same page as the OP.

On my datacenter, after 2 games in gold, you can determine the winner just by looking at the team members. You always have a team playing 4vs5 due to someone being totally lost (and being in bronze). I'm not trying to blame them, not at all, the matchmaking put them there. That's the lottery, and you can't really, on most jobs, compensate for 1 person doing almost nothing but dying over and over. And after 10 games in a row like this, you just give up. When you reach gold, you really have the right to expect a bit more balanced games, which barely happens. That's just not fun the way it is right now.

Ranked games should no longer give XP, incentive should be made on unranked matches (more XP for example) for everyone to enjoy the learning in a fairer environment and the matchmaking should be tweaked to no longer match players with such a high difference in ranking. The PvP is already plagued with a lot of issues, SE should wake up and alleviate the ones above, which is supposedly rather easy, before too many problems stack on each other and turn players away from CC (which is maybe already the case).