how about adding the option to import and export the applied filter rules to and from files and/or example sets. This would allow easy reuse and backup from custom filter rules for different processes. Additionally being able to import / read filter rules from example sets, would allow to automatically generate filter rules based on some preconditions within the process.
I suggest to add two new condition classes to the Operator 'Filter Examples' e.g.: filters_from_file for importing filter rules from a file and filters_from_exampleset for example sets.