How much more milk can be drained from that cow? Leave XC (original) alone for a while. It got a Wii, and 3ds release. As for Shulk.... well nevermind, as telling you why it's fine he's in Smash would be a spoiler.
Xenoblade 2 is on track to have more sales than both versions of Xenoblade. It's not like Xenoblade sold gangbusters and everyone's played it.
If for nothing else though, it deserves to have a proper HD console version of the game. It was amazing how much they got out of the Wii at the time, but there's still so much in that game that deserves to shine.