STB marketing was horrible from the start, currently a problem for all Paramount movies. STB plot didn't really scream for a bigscreen adventure, maybe they should went with a familiar but tired klingon villain that was more marketable.
I haven't seen Avatar since the cinema, at the time i enjoyed it more than i thought i would, but have not thought about it since
I wonder how these sequels will do, overseas will do well but domestic will need the "wow factor", but never bet against James "fucking" Cameron