This thread from 2018 is closed, and the official comment to contact support to vote for the original feature request leads to a chat bot and then a dead end. Being able to use Sketch's native prototyping features to link up and sync up an InVision prototype feels like the most obvious thing in the world. Marvel does it almost perfectly. It makes me more sad that I'm comfortable admitting* that I have to spend so much time duplicating the prototyping work I did in Sketch in Craft and then doing more in the browser for the prototyping features that Craft doesn't support.
* So sad.