Well... U stole my idea! Well, its a joke. =D
Anyway. I thinking about train station very long time. But still have no real playable idea. =)
My opinion - good map, but...
- Your map too big, proportions rly boring. I know that most mappers make such error. =) Try use 1gu = 2.8cm proportion for good results.
- Bases... uh... they have no details! Some boxes, objects and staff will make them not so box-style.
- Some unreachable areas confusing. Isolate them by barbed wire, metal spikes or something else.
- Seems i cant shoot through loco wheels. Boring. Use proper covering shader. =)
- And yea... use patches for terrain (easy way) or build up terrain not so boxy. =D