Since the transfer between the Sheppard subway and a future Sheppard East LRT at Don Mills station is obviously such a ridiculous thing, and the cause of a lot of hesitation / outright hostility from residents, could not the Sheppard subway continue through that station and run on the ROW that this proposed for the LRT?
i.e. a "surface subway" like many regions of our subway lines.
Admittedly this isn't ideal (this whole corridor should have been LRT since the beginning), but it could be the best current solution. It's better than a forced transfer. It's cheaper than tunneling, especially on a route that doesn't justify it.
We have many areas in the city where subways run on the surface. Was this considered for this corridor?