MMR seperation
I know that your MMR for ranked and normals is the same, but honestly I think it's really dumb that this is a thing. I honestly believe your MMR should be account based, but mode based. Am I salty right now, yes, yes I am. I'm sorry, but my warm up match shouldn't include getting dumpstered by a diamond player when I'm really low elo. No one would ever consider this fun.
[zombie-brand-facepalm]
Normals is games to try new things and champs, ranked is where you put yourself up to find how where you truely stack up against the community. Having the highest ranked person on my team be a Silver III against 2 golds, a plat, a diamond shouldn't ever happen, normal or not. How can you learn from your mistakes when all you do is get shit on.
I'm not 100% sure on what goes on in dynamic queue to select who goes against whom, but as someone that solo qs, just put me up with teams that somewhat have a chance against one another. Not people that are several divisions apart from one another. Put me against people I have a chance against, I'll make mistakes and realize it and learn from it. Putting people against someone that you clearly don't have a chance with. WHY? No one is going to learn in an environment like that. I get that I have a lot to learn, and I accept that.