The skinny three and four floor towns could be improved by reverting to the older, squat two floor format, but with minimal set backs and yards to maintain higher density. The older towns tend to have overly large setbacks.
I believe Aspen Ridge's "
Scenic on Eglinton" at Eglinton and Leslie has over 100 stacked towns.
This newer development on the outer edge of Brampton:
https://www.google.com/maps/place/2...3d43.7585826!4d-79.7577197!14m1!1BCgIgARICCAI
I've also seen higher density back to back towns in Durham.