Feature Request: Rules can be assigned to any folder

[maxit]

I recommend that the rules be the main list and not the folders.
List all rules and add a column to show which folder(s) it is assigned.
Use a filter field to search for specific rules.

Then you can change one rule and have it work for all folders it is monitoring. Instead of having to fix each duplicate rule.

Since Hazel is about scripting rules, it makes more sense to me.
This would be much easier for new users. At first it does not make sense why you add folders first.

[Mr_Noodle]

I'm not sure it's that common a case. It's like coming up with the solution before identifying the problem. People usually identify where they need cleaning. Not "here's a cool workflow, where can I use it?". While I may look into some way of linking rules it will probably be done in a different manner than you suggest.