Very impressive, but wasn't there a similar project to recreate BG2 under the Dragon Age: Origins' engine? Or maybe I'm mixing that one project I'm thinking of with BG2 and it ain't the case (correct me if I'm wrong, I just think I read that sometime ago but memory about it is vague now). I've never played Neverwinter Nights 2, so maybe I'll consider it sometime to try that mod, but since I've completed BG2 before I don't feel any urgency to do so.
And like Via said above... it might be shut down one day, who knows. It wouldn't be the first fan-made non-profit modification that gets shut down. I hope that he will be "allowed" to keep all [the] (his) material and that the mod will remain available for free, for the sake of his work and dedication, if anything.