Zammad will never leave “development” stage.
Let’s be real, there will always be new things you’ll want to have. Otherwise if we’d stop people would say “the project is dead”.
Development of things takes time and effort. You can always come and check if you can sponsor a specific functionality if you believe it benefits everyone.
What people seem to forget:
It’s easy to “demand” a functionality - but it’s not easy to build something that fulfills that request and is not an edge case for one person / company. Zammad functions have to be interesting for a high share of users, other wise we’re burning time and resources on stuff virtually nobody uses.
Also keep in mind that we have many users that ask for stuff, but the Core Team is fairly small against that. Put aside that some things have to wait for others…
You will find feature requests in every project. You will always find persons that are not satisfied.