I think
Confederation Parkway in Mississauga is a decent attempt, not trying to replicate the past. Of course, you can see my
Cooksville Village thread to see typical attempts in the 60s and 70s.
The suburbs don't grow organically, one small lot at a time, so they won't have the look of traditional main streets. If they try too hard to be something they are not, they can look stupid, and they won't have their own identity. That goes for anything in art, really. It's like Mick Jagger singing in a fake southern US accent, Rolling Stones don't sound like a band from the UK, their music just has little of its own identity. Trying too hard to replicate the past, places like Oakville and Markham are the architectural equivalent of the Rolling Stones: above average, but in a fake and contrived way.