I know this area fairly well and I think if the 50s/60s Satellite Diner gets knocked down it'd be a lose for the community. Clarkson has a bunch of great retro style structures still floating around, like the Canadian Tire gas station on the north side of the GO Station.
I'm not a huge fan of this building as it is. I can understanding the community opposition, especially since the Walden Circle area has messed up parking for the type of area it is (which is surprising). I'd rather see this be maxed out around 6-8s, especially since the Clarkson mainstreet study came out with a similar conclusion.