I'm hoping that this new round of development will cause the city to lose a lot of its shabbiness. For this to happen there need to be large areas that are consistently developed and offer a good pedestrian environment. Right now Halifax is very inconsistent -- one block is great, then the next is a parking lot.
Spring Garden Road is the classic example of a nice but shabby Halifax district. The main shopping street is pretty good, but it was surrounded by ugly surface parking. The Trillium development has dramatically improved one lot, and now if you walk down South Park Street from Sackville to Morris you will walk by a row of handsome buildings rather than a gap-toothed streetscape marred by parking lots. In addition to looking nice that strip will soon have more stores and more foot traffic. It will have more to offer in every way. It will even have more parking spaces than it did before.
I think the Sister sites and library will have a transformative effect on an even larger scale. The nice pedestrian area around Spring Garden Road will basically double in size and will blend seamlessly with adjacent residential areas.
Downtown Halifax needs similar development. Here's a large swatch of the downtown that's basically half parking:
http://binged.it/wAVF6u
If this were even modest residential buildings the downtown area would look much better and would be a lot more active.