On the weekend, I took a ride on the Budd car between Sudbury and White River.
A few things from the train crew:
1) they do not know when/if the Budds will be replaced. They have been hearing it for over 10 years.
2) If replaced with conventional equipment, a dome car would be a good thing to add as it would draw tourists.
3) They find it odd that the route is not extended to at least Thunder Bay. They said that it sounds like CP doesn't want it, and even wants this one gone.
4) They find it odd also that it does not connect with the Canadian.
The fact that 'coal face' employees aren't in tune with larger corporate and political issues isn't really surprising.
The Sudbury-White River train falls under VIA's remote services mandate to cover an area that had previous passenger services withdrawn. If the communities enroute had decent road access, it would be gone. I'm actually kinda surprised it has survived given that there are so few people (and no FNTs; although I stand to be corrected) that are rail access only. I suspect it is a political decision.
The tourist potential is pretty limited given that the required accommodations in White River (pop ~550), certainly around the station, are quite limited. Actually, all of White River is quite limited. Railfans perhaps but I don't see the tourist draw like an Agawa Canyon or something.
The route doesn't go the Thunder Bay because the communities along that part of the line are not isolated. Of course CPKC doesn't want it. Neither does CN, that's how we ended up with VIA. I believe CPKC argued its original Charter to divest Canadian. Also, if it ran on the CPKC ROW, Via would likely have to add a much longer and more costly remote service on the CN route through northern Ontario.
Seeing as Canadian operates on CN track, they, of all people, should know why it doesn't connect. Yes, I know, they could, but that requires money, will and aligned schedules.