Okay, I went and had a look...
The exterior's looking pretty good, at least while it's clean:
The main atrium is bright and airy as intended:
Other areas appear murky in comparison, though the large amount of space should ease overcrowding...
Dedicated taxi rank exit (currently a building site for the unfinished retail opportunities), with homeless-repellent seating and en-suite "dog spend":
Navigation Street still looks like Birmingham. Whoever's in charge of covering things in foil has missed a bit:
The drop-and-go area complements the platform level gloom, low ceiling and diesel exhaust aesthetic. Cycle parking has been upgraded from the original 6 wheel-benders to non-standards-complaint
[1] Sheffield stands, with active wheel-bending provided by motorists manoeuvring in the drop-off area (the temporary cycle parking in the Moor Street walkway is due to be removed at the end of the week):
More
here.
TBH, I reckon they've done a decent job at least on crowd flow and level access. I'm a bit underwhelmed by the lighting. Plenty of options for getting in and out of the station, and accessing platforms, mean that it'll be quick and efficient for locals familiar with where they're going, and extremely confusing for everyone else. Signage isn't bad - previously discussed font issues aside. And they've done a decent job of having plenty of random ticket machines. Cycle parking is shite. Retail opportunities are prolific. I didn't have a ticket, so couldn't examine the new rail-side facilities, notably the all-important 'A' end lifts.
Basically, I like the roof. It's a shame there aren't trains under it.
[1] I suspect that National Rail are standardising on the Brompton. These are bolt-on stands buried in concrete, so they're lower than they're supposed to be. I measured 550mm to the wall.