Greetings!
Ah, geez...I certainly agree with many who expect any such "mature themes" be discussed and detailed in a tasteful manner. I wouldn't expect anything less from Monte Cook. I've been buying stuff that he has made since he began working in the industry, from his days from long ago while working on Rolemaster at ICE. Monte has always been involved with designing interesting, thought-provoking modules and supplements. I have observed that he has always had the highest personal and professional standards. I should hardly think that Monte would change that now, or any time in the future.
Having said that, I'm not sure if I understand all the whining and moaning. If I, or Monte, or whoever, were to write up the following:
(1) Discussions and appropriate tables on prostitutes in the city, how brothels might be organized, what prices they go for, and what kinds of crimes and plots they get involved in, that somehow, wouldn't be useful?
(2) Details on what kind of magical powers evil spell-users can get if they sacrifice victims to certain gods, or demons, at certain times of the year, or in magical places, that somehow wouldn't be useful?
(3) Discussions and details on how cultists and evil minions are organized, with special spells unique to various evil cults, as well as special magic items, and horrific new creatures that these evil minions have available to them. Perhaps detail an evil tower, with torture chambers inside with floorplans, and a magic summoning chamber with a wicked laboratory. Detail how the summoning chamber works, or what kinds of benefits the wicked laboratory provides wizards when they work with it. These kinds of things aren't useful?
(4) The mighty demon princes and arch-devils, statted and detailed. Who isn't interested in these?
(5) New tables and uses for horrific diseases that can devastate whole populations, and new powders, drugs, roots, and oils that different evil cults and orders of wizards have developed over the centuries. In addition to full effects and prices, details on their creation and so on, there would be new spells and magic items. These kinds of things aren't just a little interesting?
(6) New prestige classes that can be used with the hordes of evil minions and cults. New kinds of spell-casters, demon-trained warriors, or hunters of souls, whatever. These, and new feats, especially detailing various wicked skills and powers of that these dark forces specialise in, these wouldn't be interesting, and well-recieved?
I just don't get it, I suppose. I'm just guessing at some of the contents, for example. What's the problem? It seems like to me, there is plenty of interesting things that Monte could include in such a gloriously wicked Book of Vile Darkness!
Semper Fidelis,
SHARK