Many European and a few American stations do it well too. All I'm looking for is a seamless integration with built form, retail, and pedestrian corridors in all 4 compass directions in 3 dimensions. Too much to ask?
Here's a quick link to give you an idea of what metro stations are like in many parts of the world - "station" is synonymous with "mall", even in distant suburbs and smaller cities:
http://web-japan.org/trends/09_lifestyle/lif110120.html
What I (cynically) expect we'll get is a concrete stair and tunnel with only 1 or 2 entrances. Really, a station under 2nd St between 7th and 9th Ave could have as many as 12 entrance (or 6 split entrances), and direct connections to the future 8th Ave subway, 7th Ave ctrain corridor, CORE shopping, and possibly interior connections to other private properties. AND, the corridor and platforms should enable retail, food vendors, buskers, and public art. This really ought be the model for a future downtown stations (especially GreenLine Eau Claire, Green Stephen Ave, Red 5th St, Red 2nd Ave, Red Olympic Plaza - speculating on station names) and any future TOD projects. Imagine restaurants, shops, fitness facilities/gyms, daycares, and office lobbies right at the edge of the platform. And, most importantly, unimpeded connection from one mode of travel to another in any direction.
One reason I really like the way 7th Ave is set up is that there are no barriers (stairs, doors, tunnels, turnstiles, narrow corridors) to access the platform. But while it's easy for an at-grade station to blend seamlessly with the city, Calgarians might not realize some of the problems that commonly irk the success of underground stations (crowds, minutes added to commutes waiting in lines, poor ventilation, poor handicap access, poor lines of vision, perception of danger, poor lighting, poor pedestrian environments at grade, etc).
We've learned a lot since Toronto opened its subway in 1954 (and expanded in 1966); London's Tube has been a work in progress since 1863, Paris's Metro since 1900, and NYC Subway since 1904. Other cities hold Paris, NYC, and London as examples of successful metropolises - and there are many admirable things about these cities - but technology, design, and democratic capitalism has changed a lot since these systems were built. Calgary was right to build an at-grade LRT in the '80s, rather than trying to be Montreal or Toronto. Now that the benefits of grade separation are beginning to outweigh the cost of cut-and-cover in Calgary, it's only natural that Calgary build a subway, but let's build one for 2050, not 1950. Yes, it could be a lot of work and innovation for zoning (a la bonus density) and persuading adjacent properties to buy in, but having a plan and regulations developers can count on would be a start. It would be especially great if we figured this out before the 2nd Brookfield tower is built, if it's not too late already.
All this flexibility, integration, and access is made easier by Calgary's free fare zone and progressive honour-system boarding. Let's lead, not follow.
