At some intersections, trolley wires aren't much different than a monorail guideway.
Besides, Vancouver had a monorail, just as Seattle does. They are both remnants of a world fair. However, Vancouver had built a skytrain in addition to the monorail.
Skytrain from Stadium station, esthetically speaking is essentially an obese monorail.
Pictures like these help to see maybe what SKYTRAIN would look like among high rises.
A thinner monorail guideway wouldn't be "that" obstrusive in downtown Vancouver along streets like Pacific Blvd. or Georgia.
North South would be a bit more tricky, but Burrard is quite wide:
I'd love to see a mockup of what monorail would look like in downtown Vancouver.
Other Monorail Pics:
Sydney (single loop track downtown) This model could work well for Vancouver, up Georgia down Burrard and then back up Pacific:
Tama Monorail in Tachikawa, Japan
And I'm sure you could construct a thin guideway with THIS monorail (gyroscopically balanced)