How badly does PRC invalidate vanilla NWN guides and information?

[ArchmageJoda]

I'm talking things like character building, or tactics and spell uses for the likes of sorcerers and wizards. I only played through the vanilla OC once, and I was mostly a fighter there so I'm concerned that the stuff i've been reading about how to mage doesn't really apply with prc installed.

[Stratovarius]

More adds to than invalidates. We don't change someone being able to play a dev crit weapon master, but we provide a wealth of new features for many other builds and characters.