dndfinders,
there are prestige classes that I wont take ever again but there are pieces of them that I wish I had access to. Take the Arcane Archer for example. I've never was impressed by the class but there are abilities that I wish I could get to. Maybe as spells for an elf wizard/ranger combo. It'd be nifty to have a Phase Arrow spell handy when I need it without having to take 10 levels of AA.
how about you?
booger=boy
I used to enjoy the 3rd edition Lasher prestige class. Mixed with ranger and rogue it was pretty devastating.
But in general I think prestige class abilities (and class abilities in general) should be feat trees. I don't care for classes.
Rainbow Servant. Oh, Rainbow Servant.
PATHfinders. Your schizophrenia be damned, this is not D&D and we do not seek to find it.
Hide in Plain Sight would be awesome if it were the capstone of a feat tree, say 2-3 feats pre-requisite.