I would be good to be able to base a segment query on a dynamic marketing list. Currently it is possible to create a segment based on a static marketing list, but as I understand it the same functionality for dynamic marketing list is not currently planned for the GA.

Business case - we currently have marketing automation flows in MDM based on a dynamic marketing list, and the suggested feature would make it easier to reimplement these flows in D365 Marketing without having to recreate the dynamic marketing lists as dynamic segments.

It would probable be OK if dynamic marketing lists could be automatically synchronized to static segments (with some delay), which as I understand it is similar to how it works in MDM today...