I read your points, and I have to disagree with almost all of them, especially about Sandalwood Parkway. Sandalwodd is already fairly congested, and I doubt it will be able to handle much more traffic without widening, and I do not see how that is possible between Conestoga, and the 410, without pushing the road right the fences of residences.
I am not against high density development, but putting that sort of massive development in that area is a really bad idea, and is going to ruin the character of the area. I used to bike there all the tme in the 80'a and 90's. It may have been zoned long ago, but that doesn't mean it is good idea now, especially when even City council is against the development.