I came across this, and it looks cool:
Does it seem like something that could enhance the installation and update process for Joplin? It specifically mentions app stores and signing, among other things.
(I recognize that if Joplin isn't using this already that it would probably be quite an ordeal to switch over to it. However, I'm a fan of anything that streamlines the user onboarding process since among other things more users = more support.)