I'm wondering how one would address this for managing changes to projects? For instance, in tools I've used in the past, I can answer the question "for the tasks/requirements that are at risk/due soon what would be impacted if it weren't completed?" and or "If I change this item, what is the ripple effect to my other tasks/items?". I'm used to using a traceability matrix and or an Ishikawa graph to accomplish this with filters.