Thanks for the suggestions!
- The map editor sure isn't simple, but you need to be more specific. How do you think it could be improved?
- Stamina-limited running would be a good feature to have, but I am considering to only add it as a separate mode for now (something like "realism mode"). Same goes for fall damage (currently there is none).
Also please remember that there are many other features planned which require a lot of work, so implementing anything you ask will certainly take a while!