If the Suns are going to post Q, or JJ, they need to make it a quick hitting play, which means it's needs to be coordinated so that the passer gets in position at the same time Q sets up in the low post. Ideally, Q would seal his defender to one side or the other as he set up and the pass would come to the correct side so he could go right into his move.
Obviously, it's not going to be a quick hitting play if the Suns go into a semi-isolation like they do now and Q maneuvers his way down into the post. The problem is that Q is normally so static on the perimeter that any move into the post area stands out. If he cut through the middle fairly frequently he could start a cut then just curl it to post up, which wouldn't be so apparent. And cutting is a good move itself when you've got a favorable matchup.
To me, it's clear the Suns have add more variety to their half court game and increasing the amount of cutting thru the middle and along the baseline is one good approach to doing that. Making Q or JJ more effective posting up is sort of a side benefit.
The team also needs to add at least one other 'set' - the pick and roll doesn't mesh too well with cutting though a fake P&R can accomodate some. Some version of a high post is probably the best addition.