A lot of Switch owners have expressed interest in Monolith Soft bringing Xenoblade Chronicles X from Wii U over to Switch. In an interview with USGamer, director Tetsuya Takahashi states that he'd like to see that happen as well, but it would be pretty difficult to pull off.
"Well, the future at present is unclear. Personally speaking, I'd love to play the game on the Switch, but it would be really difficult to make it. Money. It's a massive game. Re-creating it would be really difficult."
Porting games might seem like a simple process for the fans looking in, but for the devs trying to make these things happen, a lot of time, effort, and cash is required.