airports are smaller passenger drivers than you may think, particularly for local transit lines like the Finch West LRT.
Obviously it wouldn't be completely useless, but it would cost billions to extend, would serve nothing but a near-abandoned mall, casino, and the airport with basically no additional walk-on traffic beyond those three, and would be fairly winding of a route without being particularly fast, depending on exact alignment, and would only really be useful for those who live directly along the line. Those living south of the line will be better off taking the Eglinton Crosstown which will be far faster, and those who live north will be better off taking Highway 407 bus service (i.e. coming from VMC). It's basically useless for more regional passenger traffic from the airport, which is most of the airport traffic.
Right, but for clarity, I'm thinking of employee traffic as opposed to passenger traffic. Though I certainly concur that it only works if an alignment can be reasonably direct and result in a reasonable commute. I would also prioritize getting the Crosstown into the airport ahead of Finch. Though I certainly want any new transit terminal(s) at the airport to be future proofed for Finch.
Eglinton East is a good route and will be busy, but it doesn't save any travel time over existing bus service and those billions would be better invested in dedicated bus lanes throughout Scarborough IMO, or a Sheppard Subway extension to UTSC.
I agree, on an as-designed basis. I've put in my suggestions for how I think the proposal might be made more useful/attractive, but for the time being, I would consider it a low priority given the low benefit it would provide.