Just popping in.....to add a few details
Major Station Reno's always get architects these days (Vic, Park, Pape, Dufferin all have'em)
That is in part because most renos will involves a lot more than paint and tile; for instance, adding second exits, elevators, new windows (Vic Park), completely new bus platforms and canopies (Vic Park/Pape) and/or new sheltered areas/canopies for street-level buses (Dufferin).
Adding art+design is also a requirement now.
The Yonge Stations will get some attention in the next while, though how much depends on DRL and other project choices. The University Line 'Renaissance' project which did Museum will work on another station, either Osgoode or St. Pats in the next year or so.
But the next one to look at will be Woodbine, as it has moved ahead of Yonge-Bloor in the pecking order for 'modernization' as that station is delayed while they figure out the DRL and other complicating issues.
There will be integrated public art, and a second exit and elevators amongst other changes there.
I don't think the Yonge line stations (south of Bloor) will get wholesale new tile in the next while, but they may, when elevator and exit work comes up.
Wellesley is likely first on that list, but College will get work as soon as Aura goes ahead; and Dundas when Ryerson's new building goes ahead.
Oh...
On the subject of budgets.
Station Reno's under the modernization program are around 30-50M depending on the station.
Museum was done for 5M, and its unfortunate that they didn't combine that with second exit and elevator work as they might have been able to leverage money to do a more complete job.