I'd love to get AVS1 on Switch, but based on this response to a question about a Linux port it doesn't sound like the source for AVS1 makes targeting additional platforms easy.
It's a little confusing, though, because I thought AVS1 got rebuilt in Unity as part of its re-release in the last year or so. Regardless, they'd have to do some revamping of the interface for gamepad support. In contrast it sounds like AVS2 is being built from the ground-up with a ReMI-esque interface and consoles in mind.