To be clear, I suggested that a new thread be created to continue discussion exploring the idea previously talked about in this thread rather than having it hijack this thread over here (which had just had its title renamed).
I imagine that such a system would benefit from having integrated authentication with the Neverform (this appears to be fairly achievable). I haven't looked into it, but perhaps PunBB already provides functionality that we could use for commenting in this type of thing.
Some level of integration with the Nevertable for sharing replays, I don't know how critical/worthwhile source access would be at this stage.
So far as people with skills go, I'd be happy to tackle a project like this once it had some groundwork and solid design (idea, not graphic) behind it. I don't see it being particularly difficult. I'm pretty sure jammnrose would also have the capacity, but he's seemed pretty busy the last few times I talked to him.
If we did embark on a project like this, it would probably be good to approach it with the expectation that it would coincide with a future 1.6 Neverball release rather than go mad at it to get it done as soon as possible before we'd really nailed down what exactly we wanted to achieve.