Not to derail this even further, but I totally agree.
There are a few things that are fairly clear at this point.
- Dufferin Bus is way over-capacity, it needs an alternative solution.
- Massive development is underway along the Dufferin corridor at points between Eglinton and Bloor, potentially totally overwhelming the Dufferin 29 Route.
- LRT won't work on Dufferin because it would have to be tunneled. LRT is a non-solution.
- Bloor line west of St. George and the Spadina line will need relief by 2035 projections.
This points to me that a subway line under Dufferin has the potential to solve multiple factors at once. Providing rapid transit to Dufferin corridor (which is needed) and providing relief to Spadina line (which is needed).