Yeah the purpose of including Wilson in a potential deal is so that Washington isn't giving up a lot of futures or young players and also exploiting the fact that Toronto always thinks they need to get tougher (see: the 3 year deal given to Reaves, signing Domi and Bertuzzi, and continually trading for big stay at home D like Edmundson).
I also don't see why Toronto wants futures now in a potential trade. I guess they could flip those futures for a roster player, but that's an extra layer of complication I don't have faith their management would be able to execute. They are likely going to want to contend next year and the 17th overall doesn't do anything to help that pursuit.
If they feel they need to do something to shake up the core if they flame out, from their (warped) perspective wouldn't Wilson be an incredibly attractive piece, especially after seeing a guy like Marchand have his way with them again?