Not a proper map design owing to my lack of graphic design skills lol, but just a musing of what I think could be a great solution for the western extension of the Ontario Line. I had always been in favour of an extension north up Dufferin; however, I think there's great potential in using the Barrie line (when GO RER eventually happens in like 2126... sigh) as both a Dufferin-adjacent line as well as relief for the University line. That's why lately I've started to think about what else could happen west of Exhibition, while also being mindful of not replicating Lakeshore GO service.
In this vision, the line would expand all the way to Jane and Eglinton, completing a U from Eglinton west to Eglinton east, basically, and setting the scene for northward extensions from both ends (in this case, up Jane to at least Finch, in whatever form of transit that becomes in the future). Also although I am personally a fan of tunnelling wherever needed, I think we have to be pragmatic when it comes to funding, so this route also takes advantage of the fact that half of it can be done on existing railways.
My envisioned stops going west after Exhibition would be 'Parkdale' (alternatively also 'Springhurst' or 'Jameson'), 'Sunnyside' (on King immediately south of Queen and Roncy, tied to an overhaul of pedestrian access to the lake), 'Roncesvalles' (right in the middle of the neighbourhood), 'Dundas West', 'Junction' (south of Dupont and Dundas), 'Stockyards' (rail tracks west of Keele), 'Lambton' (St. Clair and Jane), and 'Eglinton Flats' (or whatever that station on the Line 5 extension ends up as).
Looking forward to comments!