I filled out the survey, for what that's going to be worth.
I'd be happy with a 115 - 120 limit on the 400 series highways, which is what I do anyways when traffic permits, so it really changes nothing for me.
I'd also be happy with increased enforcement for left lane bandits, aggressive drivers who weave in and out of traffic, tailgaters and cellphone users/distracted drivers in general. Also, license plate cameras recognition cameras to identity and take out suspended drivers, uninsured vehicles and others who don't deserve the privilege of driving.
In the GTA and other urban areas I'd like to see some kind of active traffic management where speed limits on the 400 series highways are dynamic and adjusted up and down in real time based on overall traffic volume to smooth out traffic flow. It really makes no sense to have drivers doing 120 race up to the end of a traffic jam only to have to brake down to 30 kph for 2 km, then back up to 120 and then down to 50 kph and so forth. I think a significant number of accidents on the 401 are rear end collisions caused by constant traffic flow changes and driver distraction or incompetent braking and many of these could be eliminated by simply smoothing out traffic flow.