Pros: This map is awesome. The level is very well created and the overal geometry makes every corner of the map an interesting place to mow down some blu (or reds). Its a great arena map good to play with scout.
Cons: On the down side its full bright, and dev textures. Now ussually dev maps dont really cause any problems but the problem with this one being fullbright is that it makes it hard to see where things are. The lack of shadows really makes all the grey blend together and all the orange blend together, which makes it a bit hard to play.
Improvements: Add some lighting would make the map 10 times better. If you are going to give it real textures like you said I would change the geometry around significantly so that it actually looks like something not just some walls and towers in the middle of nowhere.
Notes: Overall good job with this map