Those are all great suggestion Scottharding for ways for Trolley Square to increase it's presence in the neighborhood.
DM and Projects, I think you are both onto something, DM with accessing 500 W through that corridor, and Projects with a bowling alley. Not a Allstar lanes bowling alley, but more like a Jupiter bowl type bowling alley. A bowling alley that is just a much a restaurant and bar as it is a bowling alley. Orient the entire front/restaurant area of the bowling alley along the newly opened up corridor including 500 W and the Olympic Plaza, then have the lanes go south from that point.
Something like that will attract downtown residents and others on a regular basis. Combine that with another bar or two along Rio Grande St, keep the restaurants, and theaters, add some neighborhood retail options and you suddenly have a destination for the Gateway neighborhood residents, downtown residents.
Something along these basic lines. Red = restaurant area Yellow = Bowling lanes.