Competitive Open Queue would be better if you could only Solo Queue in it.
There’s clearly no attempt to balance groups in Open Queue, which would be fine if it was more true to the sheer chaos of Comp Open Queue. Pitting a 6-stack on voice against 6 randoms not on voice isn’t a competitive match, but pinning 12 strangers together randomly?
That sounds like a chaotic crucible where only those who actually contribute to their team winning will climb.