Well, the thing is, the added content can't really be that easily added, especially as there's a quite much of it in different things, the NPCs come with their own quests, dialog, voice acting and other stuff, the Blackpits is especially hard to do as it's a special game mode, and not part of the story mode, the Sorcerer and Monk kits can't be added to the vanilla game as that's an engine update, as is the in game zoom function... etc, so you are unlikely to get any of that stuff in the regular version... just wait the next year and you can probably buy the thing poor cheap from Steam. And it will have the BGT(it's called EET, and it's in a beta state now) mod completed by then, with seriously more mods.
Yep, Jarno Mikkola. my Mega Mod FAQ. Use of the BWS, and how to use it(scroll down that post a bit).
OK, desert dweller, welcome to the sanity, you are free to search for the limit, it's out there, we drew it in the sand. Ouh, actually it was still snow then.. but anyways.