From the Transit City Light Rail Plan Status Update October 2008.pdf found on the TTC Report Web Site:
4. With higher capital investment and a considerably longer disruption of service due to construction, conversion of the existing Scarborough RT to a multiple unit LRT technology offers greater potential for overall system expansion, consistent with the transit priority goals reflected in the City of Toronto’s Official Plan, the TTC’s Ridership Growth Strategy and the joint TTC/City Building a Transit City plan
5. There is considerable risk, however, that a decision to proceed with the higher cost LRT alternative will not be accompanied by a serious commitment to build on this technology to expand the surface network of right-of-ways.
It's not orphaned if it's useful, i.e. if the RT was extended along Eglinton to the Airport
I had a feeling they'd come to that conclusion eventually. Now the question is will they go further and understand that the current SRT routing needs to be replaced with a BD extension.
LRT is more than appropriate for the proposed SRT extension to serve Malvern and Centennial college. But it's not appropriate at all for the STC to Kennedy leg. I hope the TTC and Metrolinx get to the point where they understand that those are two different corridors with different demands and modal requirements.
While I have my own doubts about Metrolinx, the evidence from the report I quoted is that they are reopening many individual system plans: eg. conversion of SRT, lengthening the tunneled section of Eglinton, linkage of Finch West and Sheppard East.Metrolinx are just only following the individual plans of each system, even though it is supposed to be the regional planning body. Metrolinx are just tools.