Slavery is not that much of a problem, nor does a society with slaves have to be evil at all. As being said, serfdom wasn't really much different from slavery as whomever your head of family was had a say on what you were allowed to do or not. Remember, there were no such thing as modern nuclear families back then...
Also this. Asmodeus (as a deity) is the eldest god alive. He doesn't give a damn for mortals per se and even cares less for whom else they worship unless they are fine that he is the most powerful and his rule is absolute. This is reflected in Cheliax by the fact that shrines to other gods and even priests of them are allowed, but they have to ceremoniously admit that Asmodeus is the God of Gods. So unless your Paladin went on a Holy Crusade in Cheliax or started preaching against Chelian doctrine, he'd not be challenged at all. If you consider what [MENTION=463]S'mon[/MENTION] said, your Cheliax episode could culimate in one big temptation for your Paladin. He might like the respect and power given to him. He might like the absolute order and draconian "justice".
For his worship of Sarenrae: Be sure to offer him rituals of cleansing within his temples after his job is done. Sarenrae (and most gods) is not stupid. She knows her follower's hearts. So as long as the Paladin stays true in his faith, she will not let him fall from grace for paying lip service to Asmodeus in order to stay alive. This would be completely up to him and his actions.
However, themes like this are not for every player or GM. If you feel like being unable to handle it, then don't. Don't go there unless you are absolutely sold on the idea. Evil themes and societies dominated by evil hierarchies are hard to portray sensibly. Using a black&white "darkness, corruption, injustice, torture everywhere" scenario then yes, such a society would not stay stable for long.
For example, think about why people would *like* to live in Cheliax. What reasons could one give for why life is better there than elsewhere?
When we were playing evil characters who had the job to overthrow a superficial holier-than-thou LG government, we wanted the people to *love and fear* us. We claimed that everyone had a place in the infernal hierarchy and that life was easier if everyone knew where that place was. We claimed that only the strong are powerful enough to protect and do the hard decisions for those who are weaker/inferior. And we brought religious freedom. Worship whomever you want as long as you and your god also bow to Asmodeus.
BTW remember that Saranrae & Asmodeus joined together at the Dawn of Time to defeat and bind Rovagug, the Rough Beast. You could certainly play up this 'Auld Alliance' aspect, you could even have a somewhat sympathetic LN Thrunist Inquisitor seek out the Saranrae Paladin's aid against the threat of a Demonic or Far Place incursion, replicating the ancient cycle once more...And have the PC richly rewarded by Thrune when successful. Of course this all suits Asmodeus' own plans just fine...
Also this. Asmodeus (as a deity) is the eldest god alive. He doesn't give a damn for mortals per se and even cares less for whom else they worship unless they are fine that he is the most powerful and his rule is absolute. This is reflected in Cheliax by the fact that shrines to other gods and even priests of them are allowed, but they have to ceremoniously admit that Asmodeus is the God of Gods. So unless your Paladin went on a Holy Crusade in Cheliax or started preaching against Chelian doctrine, he'd not be challenged at all. If you consider what [MENTION=463]S'mon[/MENTION] said, your Cheliax episode could culimate in one big temptation for your Paladin. He might like the respect and power given to him. He might like the absolute order and draconian "justice".
For his worship of Sarenrae: Be sure to offer him rituals of cleansing within his temples after his job is done. Sarenrae (and most gods) is not stupid. She knows her follower's hearts. So as long as the Paladin stays true in his faith, she will not let him fall from grace for paying lip service to Asmodeus in order to stay alive. This would be completely up to him and his actions.
However, themes like this are not for every player or GM. If you feel like being unable to handle it, then don't. Don't go there unless you are absolutely sold on the idea. Evil themes and societies dominated by evil hierarchies are hard to portray sensibly. Using a black&white "darkness, corruption, injustice, torture everywhere" scenario then yes, such a society would not stay stable for long.
For example, think about why people would *like* to live in Cheliax. What reasons could one give for why life is better there than elsewhere?
When we were playing evil characters who had the job to overthrow a superficial holier-than-thou LG government, we wanted the people to *love and fear* us. We claimed that everyone had a place in the infernal hierarchy and that life was easier if everyone knew where that place was. We claimed that only the strong are powerful enough to protect and do the hard decisions for those who are weaker/inferior. And we brought religious freedom. Worship whomever you want as long as you and your god also bow to Asmodeus.