New areas are certainly needed to pique my interest in a port, but the in-game achievement list hopefully reduces the number of times needed for that one achievement that I never got on the Wii because it was so tiresome. I think it was about pressing B at the right time during battles and 3,000 times at that. 1,000 times would have been much more reasonable because the rest of the achievements used manageable marks.
According to what I have been reading, it seems that there is a new area in the form of the Bionis shoulder, which supposedely was meant to be in the original game but it was cut.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.