And Boddhi refusing paladins and good-aligned clerics would open a different can of worms, forcing players to consider whether it made any lick of sense that they were allying with the shadow thieves? If they have good alignment then no, that makes no sense at all. There was, I believe, some work being done to have a third option also, but it just never got done and in the end they had to settle with super evil vampires or super evil thieves, neither of which is something good-aligned characters would care to ally with rather than murder to death.
I don't think it would open a can of worms, I think it would have been a good design choice for the game. And if it would make the writers notice the "fakeness" of the shadow thieves vs. vampires choice, even better. Because that part of the plot feels like it was done only to create some narrative drama, by giving the player a choice between two evils. The way it is implemented, it only makes the [generic charname] look dumb, because faced with such a choice they don't even attempt to find a non-evil route (because the writers didn't bother creating any). This sort of bad design is also very prominent in ToB, where again your character has no agency and does as Melissan tells you.
