Those are absolutely superb, Dave: instantly recognisable even before I saw your descriptions - having had regular spells working in Brum over three decades from the 1970s, not to mention changing there frequently en route between other destinations South and North, New Street's a place I know pretty well.
The only tiny reservation I have is down to T:ANE rather than you, and that's the all-pervading sunny brightness - I certainly have seen Brum in bright sunshine, but not all that frequently.... The station's sub-surface location and the height of the surrounding buildings means that even its exposed throats often lurk in a certain air of doom and despair: a lighting quality of which those sun-baked Ozzie boys at N3V seem completely oblivious. T:ANE's apparent inability to reproduce more subdued light rather robs creators of a chance to capture the gloomier shades of atmosphere which are so characteristic of our Northern climes!
m