I think what's super interesting is blocking decay/reload patterns. How a block decays and retrogrades or doesn't retrograde. You have a great point about how absolute anomalies are not indicative of dynamic interactions, like the kind of dynamic interaction that Archambault looks at. What would be cool is to look at the coincidence of NAO/AO Westward decay and a PNA spike (positive delta) (there's probably literature out there about that), simply because that's a signal that's being born out in the ensembles for mid-Dec.