Yes, I would expect that the price of being an avowed paladin should mean that certain faiths are proscribed. Otherwise, the game would need to handle the prospect of being a fallen paladin.
In theory, you could get away with it somewhat by taking the Untroubled Faith feat, then focusing on the priest's dispositions for maximum benefit. Maybe there should be something equivalent for the Priest, so that their Holy Radiance doesn't become useless? Perhaps even the same feat?
A soulbound club called "Trump Everything". It does irrational, erratic things during combat, lets you gain extra loot for screwing up, and gives you a massive glibness bonus during interactions with low Int creatures. +4 ego boost to Resolve; -4 ego penalty to Perception.
As long as they avoid portraying the stereotypical pirates of the Caribbean trope, then I think it'll be okay. I suspect it's going to be more like Malay pirates.
Rogues are an excellent class because they provide a different path to success than just pure hack-n-slay munchkinism. When implemented properly, they should require you to use your head to think your way through (or around) a problem.