Yep, in the version I'm on (1.15) there's only global flags and config[1] which apply to all HPAs, but not all apps should scale the same way - our net facing glorified REST apps can easily scale up with, say, a 1-2m window, but our pipeline apps sharing a Kafka consumer group should be scaled more cautiously (as consumer group rebalancing is a stop-the-world event for group members)

1: https://v1-15.docs.kubernetes.io/docs/tasks/run-application/...