Honestly, the only reason I know what that arena looks like is because you pass it on the highway when you're going to Toronto via bus.
I think the farthest west I ever regularly went via OC Transpo was the IKEA & Lee Valley stores, and that's like half the distance to the arena from downtown. (I lived near South Keys.)
I'm rather surprised that an O-train to Kanata & the arena still isn't even in planning. I guess they're counting on a new downtown arena being easier to build?