They used it as an experimental trial run. They then took the lessons they learned from there (from construction issues to the handling of weather to the terrible idea of cobblestone roads) and applied what they learned to the rest of the stations as they started building them.
I agree that it's a bit of a waste at the moment, but they basically treated it as a beta station and ended up using it anyway so as to not waste it. It'll make more sense in a few years but by then we'll hopefully see the new routing that stays on Highway 7 across to Kennedy instead of going down to Enterprise (in addition to the Enterprise routing, not to replace it).