Unless you want to drive to Riverbend from the existing expressway portion of 7 - which many do, to get to work. Even other trips have been complicated. Wellington to Riverbend now has you double-back. 85 to Victoria Mall now requires you to come off at Wellington instead, and wait on a traffic light, to get to the ramp to Victoria. The original plan that Wellington turn into the expressway to Guelph seems to have been completely complicated.
I heard comments years ago with NIMBY elements not wanting Wellington to connect easily to the expressway, despite the original design. Sure looks like they've one to me ...