I agree with this.
However, I would really like to see solo shuffle be changed to instead que into the normal 3v3 or 2v2 bracket. Where you can que 3s or 2s with 1-3 or 1-2 grouped players respectively.
This would breathe life back into the brackets which would help with MMR deflation and also incentize adding people to your btag when you jive with a person you met while shuffling.
The amount of fragmentation between the brackets is reflected in the wait times.