I am a huge fan of Nextcloud and I couldn't agree more. My upgrade path is to just start a new instance with a fresh sync, because I was traumatized by a turbulent and uncertain upgrade on all of my instances once about two years ago. This is a product I love and choose to rely upon for my data, every day. I'm interested in the bells and whistles and I want the platform to succeed - my preference would be an LTS for my critical data, and the option to spin up newer features separately to test before adoption.