Rules-based workflow scheduling is a recently developed method for constructing an analysis structure, in a far more dynamic manner than traditional graph based systems. However, rules-based workflows are still in their relative infancy and lack the breadth of features available in traditional scientific workflow systems. This paper will address some of these missing features by introducing the new meow-base library for generic construction of rules-based systems while meeting the requirements of a scientific workflow management system. It will also present two example workflows, showing how rules-based systems can better enable analysis loops or human-in-the-loop interactions than more traditional workflow systems.