Well, let's remember how creaky and cranky the Infinity Engine was. It was pretty obvious in the BG and IWD series and definitely due to be put out to pasture. As for NWN... yeah, it was fugly. And beyond the visuals it was crap. I never finished it.
As for this updated version or whatever it is... been there, done that over a decade ago so it means nothing to me. Still, for people who haven't played them, it should be good.