"Solo and Dynamic Ranked can't co-exist"
You're absolutely right. You wanna know the logical solution?
Ranked (the mode that's supposed to be competitive and fair to all players so you can set goals and get the rank you deserve and see how you stack up against everyone else on an EVEN playing field) should be SOLO QUEUE ONLY. No duos, none of this Dynamic bullshit, just you and your OWN skill.
Normals (the mode that's for FUN, the one people don't grind their fucking brains out over trying to climb, where you should go when you want to play with your friends and have a good time) should be DYNAMIC QUEUE.
HOW IS THAT SO HARD?