Too many cooks spoil the broth
Minimize the number of departments, groups and persons involved in a business process
Reijers, H., & Liman Mansar, S. (2005). Best practices in business process redesign: an overview and qualitative evaluation of successful redesign heuristics. Omega, 33(4)
Employing this approach should mitigate coordination issues. Time saved on coordination can be allocated to case processing. Decreasing department count could reduce shared responsibilities, akin to the split responsibilities approach. Yet, it might hinder expertise development (quality concern) and routine efficiency (cost concern).
Foundational free Patterns
Combine small activities into composite activities
Buffer external information and subscribe to updates
Move activities to more appropriate places
Consider to deepen or broaden the skills of resources
Collect similar work items and work in batches
Automate for environmental impact
Implement automation in a sustainable way
Explore whether a process can easily be used for additional products or services
Expertise-based task assignment
Match tasks to experts' specialized skills for efficiency
Experience-based task assignment
Delegate task according to experience: execution frequency, case involvement, interactions
Reduce the number of contacts with customers and third parties
If capacity is insufficient, consider increasing the available number of resources