I have done a little bit of work to Da_Trainingday, mainly cosmetic but also for gameplay:
I put some steps in here so it's easier to get out of the hole. The train ledges were at dive height and I hate getting stuck in there. Now it's much easier to do a sneaky side dive and find some cover in the pillars.
I have always wanted to put more detail up here, but I'm not sure what. I put some placeholder cover to see how it plays. I'm thinking this could be either a fun addition to gameplay or just more cover for annoying snipers. We shall see.
I will have this version of the map up on my server - Stormy's Down Under Diver Jive - as Da_Trainingday_dev. Come play it!