the stations get watered down so that they can build all of them, if they didn't water down the stations, some of them would have to be cut.
What underground Eglinton station would you remove so the other stations look nicer?
Again, this is my point making stations nicer = fewer stations and therefore worst usability and vice versa (More stations = less nicer ones)
If we want the Ontario Line stations to be more grandiose, which ones will you want to sacrifice to make it possible.
Metrolinx should aim to cut all stations cost by 10% on all transit stations under construction in Toronto and give us a Cummer, Brimely and Cherry Stations
I think a better understanding of costs in station building is important here.
The total cost for all station finishes on the second avenue subway in NYC was ~5% of the overall project cost. (that number includes all finishes, but also included escalators and elevators among other things)
Of those, a variety of costs are fixed. Meaning, you're not going to not include lighting of some form, which has to be installed, you're not going to not have a finished floor treatment of some kind. I suppose you could go with completely bare concrete walls, but most people would oppose that, and the relative cost savings of going from medium-grade tile to a low-grade tile aren't that big, installation costs are fairly similar (for most, not all finishes)
The most you're really likely to save with a more spare design is 1% of total station budget; which is 2-4M for a typical underground subway station.
The cost of adding a single, deep-bore station to the network is about 250M
'
So if you cut the finishes budget to the bone at 10 stations, you have less than 20% of the cost of adding one station.
It is possible to build stations more cheaply, by building at-grade/elevated; or just much less deeply, that can costs by 1/3 or more; but also means a lot more construction disruption with cut and cover.
If you really wanted to save money though, that's the key; much less digging, soil removal; stations engineered with a lighter touch since they hold up less weight, one or more mezzanine levels removed resulting in fewer escalators and stairs and shorter elevator runs.