Yorkdale would remain Yorkdale because it's major exit is onto Yorkdale Rd. Mall or no mall, that'd be the most logical title.
Since there's zero cross intersections at Scarborough Centre Stn. and intentionally feeds the Town Centre and civic cente anyway, again the name's logical and sticks.
York U will have a total of 3 subway stations serving it, so automatically you're already continuing the honored tradition of sending unfamiliar new students to York Lanes when their class could be at Northwest Gt. or dormitory closer to Four Winds. At least though this station would actually be on York property, unlike the GO stn, lol!
But back to North York Centre which automatically makes me question where's Toronto Centre subway station at (Dundas, Queen, Union)? You're still not getting it. Today's NYC Stn has big, ugly, non-Helvetica font covering a good third surface area what is otherwise an aesethically pleasing wall-scape (blue/white colour scheme, old neighborhoods tribute, farm motif). Empress is short, concise, to the point and would provide a better locational function beyond homaging a puppet gov't building.
Rosedale station is located on Crescent Road. Summerhill station is located on Shaftesbury Ave. There are no rules when it comes to station naming.
Rosedale Valley Rd is immediately south of the station, likewise a zillion Summerhills are just north of Shaftbury. If a sidestreet in the vicinity of Dundas/University was all it took to produce St Patrick Stn, these can get a pass, especially when the area surrounding them's already known as Rosedale and Summerhill.