Not all terminals have outlets, due to no existing maps for the terminus to transport players to, as Puar hinted. The outlets of the same terminals used in the handheld games, the northern terminal in the reception building in this case, are mostly meant to lead to the same areas as used in the handheld games.
What's more open-ended is the purpose of the inlet—whether it will adopt the purpose used in the handheld games, or if a more creative approach will be taken. The latter is more likely, and more favorable, to be brought to the table here, and the groundworks for its purpose are still open for discussion.