At the moment TieredCompact is naive. It uses context thresholds the consumer determines and fires when those thresholds are hit. It just does different things at different threshold levels.

Your idea of using task shape to dynamically set those thresholds (or even move to model-triggered) I think is the key but is a trickier implementation. That's what I haven't gotten around to yet.

Definitely on my todo list but happy to check out a PR if you have something in mind.

Some additional info on my current public hack is also at: https://github.com/antoinezambelli/forge/blob/main/docs/USER...