Insert my zero-g blues:
Add rails, more rails. Safety nets and break-proof glasses.
Danger strips near doors.
Add some serious looking pressure-holding doors + airlocks.
If I were to desing a spaceship I would put a bulkhead-class door with a locker before any critical space - bridge, engineering, main observation deck, CIC center, labs on a science ship,
Paternoster / Moving handle belts for quick low-g/zero-g movement. (A conveyor belt with handles you can grab).
An over/under rail to support small trolley cars - would be a godsend for moving stuff. Only for apropiate corridors.
If the corridors you depict are for moving personal only make them smaller. Too much space on a corridor is troublesome on a spaceship - in low/zero-g or just under high-g manuevers its hard to grab on.
If the corridors are purposfully big to move equipment put in the aforementioned utility features that would make it easier.
Don't forget: safety first. Not so much of the passengers, but the ships and the equipment - if either can be damaged through careless act it was poorely designed.
Don't hesitate to put pipes and loads of wires into areas that are meant to be utilitarian and act as service levels.
Beside railing, put handles everywhere! On the "roof" and especially on the "floor"! No more stupid Trekkie falling out of your seat. The first thing you do is either sit down and buckle in (I hope you put harnesses on those seats) or at least put your feet into these handles.
About the seats: for general low-cost and especially big ships with massive inertia the ones you made are good.
However on stations where great accelerations can arise the seat should be put on spindles and hydraulic suspension - current automobile design also uses this principle. Let the forces take their toll on as long a distance as possible.
Buckling down the person without other measures as hard as possible is the sure way to insure the greatest harm to him.
Did I mention you're wasting space? Those stations look impressive, but in the middle of manuevering or just looking at critical readouts, do you want to stand up and jump to different portions of that massive panel?
I would rather have easly acessable keypads at my hands, above my head, on my sides.
You don't have to put everyone on the same level - arrange work stations in a cascading manner to save space.
Overall your progress is good, but its too generic corridor of any given space flick without a sensible layout so far for my taste.
It's good, but IMHO a lot of thought can still go into the actual design.
The FS mainhalls were pretty utilitarian and wasted little space - although they were big and spacious you had a sense that this was the heart of the ship where everything went through therefore the space seemed called for.
