Wow this thread is still going... I guess I should make some form of announcement...
There's good news, and there's bad news.
The bad news is that it's not going to be freely available here, due to the sheer amount of time I've put in it.
The good news is that I
am working on v4, and it is shaping up to be awesome. Not necessarily with features alone, but because it's module based. What it means is that if you want only, say, support for Guilds, and you don't care about Battles or Items or any such things, you can get only those two features.
You're not paying a huge premium for features you don't want, and you're not bogging your forum down with queries for features you don't want.
Since I'm barely done with the Core (which is nothing beyond character creation), and even that's not fully ready for all the modules I'll be writing for it over time, I don't have any time frame or pricing (not that I would be allowed to mention the latter even if

). All I can say is, it's going to be quite reasonable, and you will be able to pick up every single module without feeling like you just bought something that should be delivered to you via a Concorde with fox skin seats and a parade of dancing girls.
v4 is also going to be easier to install, and I've scrapped the installer used in v3 in favour of vBulletin's own product installer system.
Thus far, nothing is requiring template changes either.
Additionally, it's not going to require an external money modification to work (but I'll probably add support for it at some point in the future), so none of the configuration hassle that's apparent in this thread.
You can check the progress on the RPG via the site I have listed as my Home Page. Just keep in mind:
Please don't join there just to PM me asking for details or updates or anything. When there's updates available, a post will be made in the RPG forum on that site.
Oh, and don't join there to tell me I suck for "selling out" either; I have the banhammer and I'm not afraid to use it =P