> A long release cycle has meant I don't have to update any of my existing Elm code. That's a WIN to me! :)

Instead you'll get a very big batch of breaking changes, that means the community will properly take a very long time to migrate to 0.19. Long release cycles are NOT a good thing.

Python 3 is the canonical example, but there are plenty of other times where too big a release brings about splits in communities.