Thinking about that one comic I reblogged a few days ago with Jonah choosing Martin as his next body and how interesting an AU that would be.
Technically it would have to have a lot of hand waving as to how Jon doesn’t just Know what Jonah has done, and the risk of Jon Knowing his plans is why canonly he avoids Jon in s4.
But considering that Jon all but admits to himself that he has a crush on Martin at the end of s3? You know Jonah would take advantage of that, plus it means his Archivist’s attention is on him, where it belongs.