This reflects pretty well all jobs that are bad at downtime management. For instance, MCH, while able to pool and store a lot of resources, is totally helpless during downtime because it cannot hit any targets. DNC is in a similar state and at best can precast dances and I'm actually surprised that Improv never got to fill up gauge slowly. Only BRD does have some downtime tools, namely songs that continue to fill up repertoire even if there is nothing to hit.