It's actually kinda' fun. "Clerics," now freed up from the Christo-warrior-priest trappings of D&D's ecclesiastical class, are able to pursue much more interesting endeavors in the name of their chosen worshipfulnesses. Take T1's Lareth for example. He's too stupid to direct a diabolical cabal of any import, but with his commanding presence he's exactly the guy you want leading your troops onto the field against them tight-ass forces of Superfluous Good. So I've re-worked Larry the Hunkadelic as a sword-and-lance wielding bad-ass knight of evil chaos who is so awesome that not only is he shagging Lolth, she's seen fit to bestow him with some cool demonic powers. Rather than "praying" for new spells everyday--how lame is that?--he can use these spell-like powers--poached from his spell list in the module--a limited number of times per day:
- Hold Person
- Cause Blindness
Fabricating a cool NPC is fairly easy to do in this manner; I can mix and match powers, poaching from spell lists at my leisure without having to meet the parameters established by any particular character class. NPCs are whatever I want them to be. This also keeps the players on their toes, since NPC MUs also live by different rules than their PC brethren.
But can I reverse-engineer a religion-based player class that incorporates the motivations of a divine/malign force or alignment or what-have-you into a progressive character class that is also somewhat balanced with the fighters and the MUs and such?* Only if there were a very limited number of deities/divine forces to choose from, 'cuz each cleric dedicated to each otherworldly force would, in essence be like re-making the druid class. For the time being--especially since none of my players are clamoring for a cleric--it's best I leave the godly powers in the hands of NPCs.
* Yes, some old schoolers will try to tell you otherwise, but ever since mail-clad fighters and robe-wearing spell-jockeys started teaming up to pillage underground hobgoblin condos back in the 70s there have been efforts to balance the character classes.