As to this scheme more broadly. I'm not sure, I need to see more detail.
My first instinct is that all the public space being on the east side will offend my desire for visual symmetry!
But I'll keep an open mind on that.
I'm also, at first blush, less excited by the triple allee than others.
First, I want to see lots of exposed soil around the trees to maximize their health and growth, I wonder if in going for a triple allee one isn't precluding proper space per tree and/or prescribing only columnar (likely non-native) species (as wide-crowns would be too close together).
If I'm reading this correctly the notion would be to remove 2 vehicle lanes (Univ. north of Queen is 4 each way currently); with one devoted to the new cycle track, and the other being added public realm.
I'd be open to any combination of, public space shifted one way, a redesigned and enlarged median (3M wider); or splitting the space now in the median between both sides.
In regard to trees, no monocultures please!
Also, can we consider use of conifers already (as street trees); if you use the right soil, and set them well back from the road (reduced salt exposure) not only can you get a striking streetscape effect, but you can also get year-round green. Imagine 2 allees down each side of University. One using alternating between Eastern White Cedar and White Pine; The other between Sugar Maple and Red Oak. Now picture that fall colour view. (just saying)
Second, don't just imitate other people's public space, be original!