1. yes, I have this in my plan for future first stable release but haven't implemented it completely but you will soon see it.
2. yes, you can do it by a handle before the file name at toolbar. you can just drag it anywhere it should work.
3. yeah that seems to be an interesting idea I would definitely give it a thought and see how it turns out to be in my workflow and will discuss it here later.
btw thanx to hear support from you I hope you will use and test it and let me know if there is more to tell, it will help this to reach stable version. 🥂