Yea this is what should be aimed for in the middle term. Anything bigger involves a number of technical chalenges.

But being able to migrate your "setup" to another instance is the middle ground that will actually doable in the short term and a rather significant improvement in the user experience.

"Setup" would include subscriptions, and any further details about subscriptions that may come along like user defined multi-subscriptions etc, settings, cakeday (suggested elsewhere in the comments and a wonderfully human suggestion), blocks etc.