I love Rubio and Dwight together just like I loved the idea of Rondo and Dwight together.
I think Rubio's passing ability is going to be insanely difficult to contain in the pick and roll with Dwight as a screener and surrounded by shooters.
I wouldn't be worried about Rubio's lack of shooting. I would worried about the shooting ability of 2 through 4. My two guard and my two forwards. So long as those guys are good shooters, Rubio's lack of a jumper doesn't worry me. If those guys are bad shooters, problems can compound quickly and become problematic. But by themselves, Rubio and Dwight should be able to work very well together.