I recommend visiting the station with a tiny ship equipped with overdrive, parking nearby and pressing C, then exploring using build mode.
A few things I looked for with the trade stations: Good lighting, useful spaces, easy to navigate, pleasing to the eye.
Bonuses, use of permission blocks, docking modules my ship fit on.
Couple of negatives for me were use of gravity modules in place of lifts, confusing layout, hallways to nowhere, good exterior looks but terrible interior.
A few things I looked for with the trade stations: Good lighting, useful spaces, easy to navigate, pleasing to the eye.
Bonuses, use of permission blocks, docking modules my ship fit on.
Couple of negatives for me were use of gravity modules in place of lifts, confusing layout, hallways to nowhere, good exterior looks but terrible interior.