In Riot's own words of Dynamic Queue:
"Solo/Duo Queue will be enabled while we triage technical issues on Dynamic Queue."
For those who don't know what this means:
http://dictionary.reference.com/browse/triage?s=t
Even they're admitting there's more issues with this than supporters care to admit, so much so they're trying to figure out what to prioritize first.
But please go on sharing why it's such a great queue.
To clarify: Dynamic Queue refers to 1-5 man queue. New Champ Select is what the role selection falls under.