I would take a frequent, but slower streetcar ride over and infrequent bus. If the streetcar comes right away, but operates slower, I would still get to my destination faster than waiting 30 min for a fast bus. I'm talking specifically west of Gunns loop with route 189. Every 20 mins, maybe?
If the St Clair streetcar gets extended today, especially after the Finch fiasco, I think it would have a lot of lessons learned from Finch and St Clair bad designs and implementation. If it were to be extended , there should be room for buses to operate for both shuttles or parallel bus service like 79 to comfortably operate.
Too bad it's not a priority, especially the connection to Jane and Scarlett buses. And potentially Junction on Dundas. It's a missing link.
Wasn't there land set aside for a future extension of St Clair ROW west of Gunns loop? It appears wide enough right uo untill about Britannia street. After that towards Runnymede it gets narrow.