Minne needs a LOT of things. Pek hasn't had a full season yet, but he could prove to be one of the league's top centers. Love is already a dominant PF. Rubio is a point guard who can't shoot worth beans and gets lost on D. Beyond that, shooting is absolutely horrid. Harden would set them back in progressing -- he's not a good point (and certainly wouldn't be better than a healthy Rubio).