I believe this is a planned feature, but it hasn't been formally requested. The ability to apply operations and overlays to items added in the last day (for example) so that incremental overlay/operations can be applied rather than having to update each item on each run. I believe there are also plans to split operations (and potentially overlays) to make them apply in batches. For example: Monday: Apply operations/overlays to items starting A-G Tuesday: Apply operations/overlays to items starting H-M Wednesday: Apply operations/overlays to items starting N-S Thursday: Apply operations/overlays to items starting T-Z