As I said in another thread, removing this onramp would hurt walkability in the short term, but the onramp hampers creating a walkable environment in the long term. It creates half a block of dead space, primarily for the purpose of making it slightly easier for cars to get out of downtown.
Previous Landing plans have included pedestrian access there even with the onramp removed and replaced by a building. This is a good opportunity to find a solution that has the least negative effect on pedestrians, while still removing the unnecessary car ramp to make way for pedestrian-oriented development.