Ranked Roles don't work.
The purpose of ranked roles was to give players an accurate assessment of their skill in each role.
...yeah, that ain't happening.
In concept, it makes sense, and I get where you're coming from, but there's one big issue here.
I don't have time to climb ranked in 5 queues
It's the same issue I have with Smash ranking you based on fighter; you can't get more than a couple characters to high rank, just because of time limits.