The batch rename operator supports chaining operations, allowing for setup actions which users may want to re-use.
This is a convenience feature.
Example use cases (which may be possible in the future):
- Add a prefix.
- Number the object/bone based on it's level in the hierarchy.
- Add a L/R suffix based on it's side.
- Rename them to match their object data.
- Number them, ordering based on their Z locaiton.