Actually, one of the problems with polynucleation is the 905 and how Union is the only Toronto terminus of varying GO lines. So if you locate an office in Scarborough Centre per se, nobody from Peel, Halton, parts of Toronto and parts of York will consider it as an employment location. You've got eastern Toronto and Durham region basically. Whereas *everyone* can get downtown via transit, at least relatively easily. It's even why Bloor-Yorkville is losing offices and has been for 20 years. Nobody wants the second commute up Line 1. Albeit, a Summerhill GO could conceivably turn that around somewhat.