There’s plenty of issues with the backend of Lemmy itself that are being worked on.

I am not sure whether it would be better for Sync for Lemmy to wait for these core issues with the Lemmy platform to be resolved (e.g account migration) or to release early and potentially be off-putting for people trying out the Lemmy platform.

As a user, if the instance I originally joined is shutdown - I would want a feature that lets me easily transfer my account and data to another instance. But not sure how this would work considering right now I could go make an account with my username in a different instance...