Yes, this is the perfect, most opportune time to fix the "errors" of the Crosstown Line before any trackbeds are laid down the street median.
The Brentcliffe portal could transition the alignment to a south-of-roadway station at Leslie slightly above grade, which then leads down into the tunnel for the Science Centre Stn then elevates again to cross the DVP with the next station elevated over Wynford and remaining elevated the rest of the way to Jonesville, where it descends into a trench for the station at Vic Park. It then rises out of the trench for an elevated stop east of Pharmacy (serving both the Pharmacy and Lebovic areas), then elevated Golden Mile and Birchmount Stns, then dips underground for possible Ionview? and then Kennedy Stns.
For the eastern extension, to Danforth Rd is underground, then elevated with Torrance/Bellamy and Markham Rd above grade stops to east of Cedar Dr with underground stop at Scarborough Golf Club Rd, then elevated again over Guildwood GO parallel Kingston Rd until Lawrence where it dips underground for the next station and stays underground til it crosses Highland Creek elevated on a bridge to enter UTSC, underground stop then north of Ellesmere/Military Trail surfaces again for the terminus.