I won't speak for ranked games since I haven't played them for a while and they're secondary to normals IMO, but I'll say this:
- The queue where i can safely pick my role with a little to no chance of someone taking it or trolling because they didn't get the same role, is already an improvement, making the game less frustrating to play, this is the DynamicQ
- The queue where I can be the firstpick, hold all the bans but still get 2 trolls because they didn't get midlane is a bad thing, that was the old SoloQ
- People being premades doesn't automatically make them good, I had 4 other friends with me and we still got stomped, and I stomped premades with 4 random people. With all this crying about premades all I can see are players that were not good enough to climb the ladder and now have a new thing to blame for their failure.
Bottom line, this is a GAME that is supposed to be played FUN, having to fight for your role, knowing you can't dodge anymore because you had to 2 times with trolls is NOT fun. Being able to Pick 'n' Play a certain role out of 2 that you have to pick and knowing that there is very little you have to worry about IS fun.
That being said - improving ranked would be a good idea, restricting the number of premades to 2 in a ranked game and always puting them against 2 other premades would be the best option. Only to shut up the crying people. I got out of bronze just fine on my own and when i get some time off studies I'll go for the gold because I only want the reward.