I don't think left turns should have been allowed anywhere on the above ground part of the Crosstown. Cars turning left will delay the trains/trams and encourage the city to give signal preference to vehicular traffic in order to clear the backlog of cars waiting to turn. Instead all cars should be forced to either go straight or turn right. Just like at Kingston Rd. and Midland, where if you're EB on Kingston and want to go north onto Midland you must first turn right Kelsonia Ave. and then onto Midland so that you cross Kington Rd. directly, see map
https://maps.app.goo.gl/FrNWKjMeVtuQLh2q8
If all of Eglinton east is being terraformed into a new residential district this seems the perfect time to reconfigure the cross streets so that there are no left turns.