Well, I wouldn't be able to be project lead on the next version of PBW. I could help out a little with design, and more with coding and testing, but I don't have enough background in server technologies to really take on this kind of project as lead. Give me a component of it though, either front end or back end, and I could probably get it working
I'm language-agnostic, so I say use whatever the project lead is most comfortable with.