I’m working with hatches lately and I thought I could some ideas on how to improve them.
Ability to snap to the hatch
Ability to trim a hatch
Hatching itself is very tedious, you need to create a closed curve to hatch etc. I would suggest in tweaking the tool so it works more like Illustrator live paint. This method is very quick and efficient. It recognizes the hatching regions automatically. It is a combination of CurveBoolean and Hatching.