This whole thread is kind of based on the premise that, had we not traded that pick, we would have drafted Pendergraph. I don't know of any reason to think that's the case, though. The FO must have thought we needed a PG, since they traded for one, so my guess is we'd probably have drafted someone like Sergio Llull if we hadn't traded for Sergio Rodriguez.
As for the argumant about whether we need a shot blocking defensive C or a pass-first PG, I think we need both, but I'd give the PG priority. My reasoning is this: we can't get a solid defensive C who blocks a lot of shots and also makes 5 assists a game, and threatens the opponent with deadly 3-point shooting. Players like that barely ever show up, and if one did, we'd be in no position to get him. So we will have to settle for a defensive C who is simply a good defensive C, and has no real PG skills.
When that C steps onto the court, we will not be able to run the offense through him, which means it's going to be up to someone at another position to be making most of our assists for us. Like, for example, a pass-first PG. If we have one of those, we have insurance against Evans not adjusting to the switch from SG to PG quickly (if at all), and can go from a Princetonian system to a more conventional offense at a moment's notice, even if it's just for a play or two. In that way, it's a good thing for us, even if we don't have a defensive C for another decade. But if we DO add one, we're ready start playing with him right away.
On the other hand, if we add the defensive C without a pass-first PG (or someone running the point at some other position), then we might become an 18 assist, 22 turnover team with intermittently better team defense. Any weakness at the point would become even more exaggerated, possibly cancelling out a lot of the benefit of the better D.
So I absolutely do want both, but I want the PG first. I'm very glad to have Rodriguez.