Aesthetically, sure, but I'd worry now about what that polish means for the street's values all the way up to Bloor. Though I barely-but-somewhat sympathize with the 'Yonge is a trash heap' (though not in those words) crowd re the 'Yonge Street Draw,' I question whether the answer is to clean everything up to the point where only chain and corporate retail can afford the rents...
It's gonna happen, but at what cost?
Considering the alternative of disinvestment and physical decline of the structures, I don't think there is much of an option. If not "cleaning up", it would have been wholesale demolition and replacement.