You're certainly not alone as a Xenoblade fan, although admittedly I only played Xenoblade because during that whole phase when people were CONVINCED that Shulk would be the next announced fighter (which actually ended up being Lucina), I was like, I don't know who this character is, and I looked him up and what he was from. Surprisingly, people had nothing but good things to say about Xenoblade, and the game has just fantastic scores by anyone that reviewed it, so I decided to give it a shot.
Ended up finishing it about 5 days before Smash 3DS was released in Japan (where I live... took some time to import the English version, since even though I CAN speak Japanese, I PREFER to play it in English if possible), and absolutely LOVED it. Decided I was going to main Shulk regardless of ability way before I finished it, basically right after the official announce trailer. Xenoblade is basically the only game where the MAIN STORY easily hits 100 hours that I didn't feel was a drag at the end (the only other one I've finished was Persona 4... and I was pretty much forcing myself to finish that) and was sad when it was over, despite the great length. And the soundtrack is among the best game soundtracks I've ever heard. Just phenomenal stuff. Hoping the Wii U version adds more than the three songs the 3DS version gets, because the soundtrack really deserves more than that due to the extremely high quality.
I also really like that they included swimsuit Shulk just because it's one of Shulk's armors in the game (the one I used because if I'm given the option, I like to make the characters look ridiculous for cutscenes. Sharla was in her Jungle outfit the whole game, and it was fantastic. >.>). Was slightly disappointed to see that his other costumes were just alt colors of his original and not his other armor options in the game, but when I saw that they were themed around the rest of the party members, that made that slightly better. The attention to detail really helped seal my decision to main him. Am loving every second of it, too.