Ray Cullom can already picture it: a new downtown Bellevue light rail stop — adorned with a jewel-like screen of “ripple” glass by artist Paul Marioni — that will tether the Eastside to Seattle. Across the street: “Bellevue 600,” a shiny, 43-story office tower for Amazon office workers. And, on the same block, in the middle of a three-tower, skyscraping multiuse development: a playhouse and community center dedicated to the arts…