Also what is to become of the RT stations do they get preserved to appear in commercials and open up on Doors Open. And save a trainset or 2.
Scrap and scrap, most likely. Land then passed to Create TO etc for better use, with the (rumoured) use of the guideway as a linear park.
If the TTC offered a set to Halton County Railway (or others), I'd expect they'd decline the offer, given the complicated, fiddly and expensive linear motor stuff - and the fact that the units are literally falling apart (hence their imminent retirement!). At best, it would be a static model.
Maybe a fire sale of signage etc - but there's nothing really worth keeping from the stations. (the stations don't have artwork, for example)