I think that XCX's story was pretty weak and that the vast area there was for exploration was really empty and in every place except Noctilum bland, but since everyone else dogpiles the poor game every time it's brought up I'd like to point out that it did do some things better than the original Xenoblade, namely allowing me to use Cosmetic Armor so I don't have to make my female characters look scantily clad just to get a stat bonus. Xenoblade in general has a bit of a. . .problem with female armor alts, but at least XCX lets me cover it up to taste. Also, I appreciate it for being the first character creator I've used that actually lets me make my character have two-color hair.
And it's the first non-Pokemon RPG in a long while that I actually played all the way until I beat it without quitting or restarting, so that must say something good about it, right?
As for the soundtrack, I found Sonic Rush's soundtrack fun to listen to so of course I actually enjoyed the rap and the anime theme song in XCX. I just wish the guy hasn't rushed writing said rap, because it seems like he didn't even care about doing a good job in that case.