I don't mind the interior of the Hyatt. Those high ceilings are quite something. But having gone and taken a look at it on street view just now, you're right about the exterior. It's clean, but it's really starting to look a decade old and the doors are small and often obstructed. Their loading dock also really doesn't help matters. There probably isn't much that they can do though. Maybe the answer is to make more of their 8th Ave. entrance?
I also think that intersection is generally terrible as it stands. Sky is still quite a ways from blowing everything else out of the water. The Palomino is magical, but the parking lot next door is most definitely not. Then there's the Bow Tower II Strategic Gravel Pit Protection Area, which I think can most charitably be referred to as the best place to get a wood splinter in downtown Calgary.
***gazes wistfully out office window***
If only Amazon could come to Calgary and build something amazing there...