After watching that video, its a huge improvement over Wild ARMS3 and Code F in terms of visuals. Much better animation and character modeling. The battle system also looks drastically different from the previous ones.
That video doesn't work for me. I loved Wild Arms 1, liked WA2 enough to make me want a 3rd, and for some reason liked WA3, but never could go and finshed. I just didn't want too.