Hey, this is a big deal for us BC people
I never used to realize just how antiquated highway 1 and the interchanges were until I visited anywhere else.
You are right about the new construction design standards... but you can't discount the fact that the terrain is much more conducive to a 130km/hr design speed throughout the Prairies, and Southern Ontario than it is in most of BC. The SFPR and S2S highway are badly constrained by topopgraphy, and last acquisition costs, so 80km/hr is a compromise. A 4-lane S2S freeway would be nice, but its really not necessary.
That said, having just got back from a month in Germany (avec rental car), I have to say I am really envious of their autobahn network. It functions extremely well as a regional highway system -- and operates well to bypass major centres, BUT NOT act as a major artery into the downtown. Of course, gas is $1.47Euro a litre for regular... but they get good roads for their buck. Everywhere we drove, a bridge was being replaced... or 4-lane was being 6-laned.