I wish they would define a class agnostic public interface, then split out "Django models", "Django admin", and other components, so they could be used separately.
That’s not a slight against other projects like Flask or SQLAlchemy, just the need to take on more integration work. If you have a Django-shaped problem, you really want to ask whether you’re going to see so much upside from something else that it’s worth taking that extra work on.