Build on/off ramps to the Gardiner west of Bathurst and build a Front Street extension west of Bathurst. Build a Go station in that corridor for the Go Lakeshore line to eliminate the need for those riders to use Union, and build multi-level parking garages in the immediate vicinity of the new station. Have a spur from the new Downtown Relief Line come down from Queen to access this Go station (at least streetcars). Now you've got a means to increase the number of train sets on the Go lines heading into the city, including Smart Trac, and a means to keep cars out of the core because commuters can park and get on transit. At that point you can remove the elevated Gardiner. (An additional option if we insist on maintaining an expressway connection between the Gardiner west and the DVP is to make it an underground toll highway. I say put it in the same tunnel as the DRL. Tolls can pay the capital costs of the tunneling the DRL. It also means we wouldn't have to deal with the costs of keeping the existing Gardiner open as we try to tunnel underneath it, because we're tunneling elsewhere, and could keep the existing Gardiner open until the tunnel is complete.)