I like the setup you did for Decker's run to the hangar deck.
On the "Journey to Babel" section, right past the A frame there should be a corridor leading to the port side.
Also, Mytran made a pretty good point (in an earlier post on my thread) that the "LTBYLB" turbolift exit is not really from a turbolift. In my earlier WIPs I left it as a turbolift but my current setup leaves it as a pathway to a lobby that has a turbolift.
Anyway, keep it going