I've always struggled to understand who the Trinity Hills development is targeted for - it strikes me as a bit unusual development. It's a hodge-podge of ideas but at a surprisingly large and expensive scale: part big-box, sprawling strip mall highway development, part mid and higher density apartments, part auto-dependent nature reserve.
I would have guessed that total auto-dependence and being surrounded by highways immediately nearby with no schools would be a tougher sell for families, but perhaps that's not the focus - which is kind of unusual in itself, as the vast majority of surburban developments use the family-focused angle extensively in their sales pitch.
I also get the sense that this is playing off many Calgarian's desire to be "closer" to the mountains, and I guess on ski days residents here will shave a few minutes off the commute. Perhaps I am just underestimating how attractive people find that argument, enough to have substantial numbers of people buy expensive houses in this location to support a development at this scale.
Maybe the regional development economics plays a role here too - the southwest and west are relatively constrained for conventional sprawl thanks to the quirks of even richer people in Springbank effectively being able to prevent it. That could have focused pressure into the few areas left even if they would normally have been skipped or developed a much less intense scale, such as Trinity Hills (and the West District too).
Any smarter people than me have some insight on the thought process of this development?