Mmm, I'm rather surprised no one has commented on this yet.
While I have basically no interest in roleplaying, I must say this is really cool stuff. Some of the articles really makes a lot of sense and even gives a "canonic-like feeling" even though it was purely fan-made. As for now, I'm only reading the articles about the canon characters, and so far I liked each of them. As you have mentioned, it seems like you guys really do try hard to emulate the characters as perfectly as possible.
So far, my favorite article was Sariel's. I was rather impressed on how you guys managed to give so much depth to a character that, uhhh... has no personality, no background, no dialogue... nothing. Although, I could say some of the articles could be improved, like Konngara's for example. I mean... it'd be nice explaining better who was that "mysterious voice" and why did it tell her to guard the silent shrine, but that was pretty much the only flaw I saw on that.
Hopefully more characters will be added soon. I'm especially curious to see Hina's, since I think she is an important character for being a Curse Goddess, even though she was merely a stage 2 boss... so, I think it's quite possible to develop her really smoothly. Other characters such as Shingyoku, Meira or Elly would also be a delight to read, and I'm looking forward for those, as well as many others.