There is one simple solution to solve the problems of Leslie and Eglinton and I believe it would make the LRT riders AND drivers happy. Unfortunately, while simple to imagine, it would probably be prohibitively expensive to build. However, I'll throw it out to see what you guys think.
Keep the LRT in the median with the station just east of Leslie St, as per the current plan.
Keep two westbound lanes on Eglinton (north of LRT tracks).
Keep two eastbound Eglinton lanes (south of LRT tracks). Southernmost EB lane ends (merges into other EB lane) between intersection and CPR overpass.
Have (only) ONE left turn lane from EB Eglinton to NB Leslie. But have it start elevating just east of the West Don River bridge so that by Leslie St. it can turn north on a bridge over to Leslie north and then ramp down to grade to become the westernmost NB lane of Leslie.
Have one of the two SB Leslie lanes go to WB Eglinton as is now.
Have the other SB lane ramp down to a tunnel going under the WB Eglinton lanes and LRT tracks and curving south-east to emerge as the northernmost of the EB Eglinton lanes right near where the two (straight-through) EB lanes merge into one.
Have the WB Eglinton right-turn lane become the second NB Leslie lane (the one on the easternmost side of Leslie).
Build a pedestrian bridge with ramps from the south-side of Eglinton over to the NE comer of Leslie and Eglinton, with a ramp in the middle down to a centre LRT platform. It would also have elevators from the platform to the bridge and one at each end for full accessibility.
Here's the kicker:
Eliminate ALL signals!!!
LRT would continue totally grade separated from Brentcliffe portal through Leslie stop and Don Mills station.
All traffic on Leslie and Eglinton would be non-stop with NO SIGNALS. This would more than compensate for the pinched lanes (merging) on EB Eglinton and the fact that the left-turn lanes (both EB to NB and SB to EB) would be reduced from two to one. Traffic wouldn't back up because it would never have to stop. Pedestrians could cross Eglinton using the ramps/elevators and bridge across Eglinton and the yield to pedestrian signs could remain across the right turn lanes from WB to NB and SB to WB.
All traffic would flow continuously through the intersection: LRT, cars and pedestrians.
Something to chew on...