- Very large cities look bad in the generator and they are slow to generate. I hope to improve them in the future, but for now you can use the method I described here: link.
- Zoom is not implemented due to some technical issues. It will be added eventually.
- Several wall rings (if I understand you correctly) is a frequently requested feature, but I doubt it will be implemented anytime soon.
- There were forests in early versions of MFCG. Later they were removed because they didn't add much. Also having them so close to city edges is not historically accurate.