Your map seems to become very nice. Few points I want to discuss with you :
Why beta version ? What do you plan to do on your b1 to make it final ?
Houses seems not enough old, too much clean. Add more details on the walls. Destruction makes ashes and burns. And is it normal to find sliced houses or destructed walls when other houses are like "what ? a war here ?" ? The difference of ambiance is too high between those houses.
Edit official maps to find inspirations for example.
Your environment must have 1 story, 1 spirit, 1 heart. More is very difficult to handle with !!! It's not only know how to use hammer that will makes your map a "one more" to "a classical one"
My advice is for the best, hope you'll take it wisely.