I don't think we would have traded for Pau prior to the Ray Allen deal. I just don't think it was very feasible at that time. Which means any deal for Pau could not have included the pick that netted the C's Ray Allen. In otherwords, I think the C's easily could have had Rondo, Ray, Paul, Jefferson, and Perkins to pair with Pau. I think the C's could have at least been comparable to the offer made to land Pau to the Lakers and may have actually been able to trump it depending on how Gomes, Green, and Minny's future 1st were looking to the Grizzlies. Ratliff was nothing more then filler.
I don't know if the Celtics win the title in the 08,09, or 10 with that lineup, but I'd feel a whole lot better going forward with a very solid top 4 of Rondo, Gasol, Jefferson, and Perkins not to mention the still viable Pierce (and maybe Ray Allen).