Cabin ambience should be reusable
A strong cabin atmosphere often uses the same kinds of assets again and again: boarding music, deboarding music, chimes, safety audio and passenger-facing media. Rebuilding those choices for every flight is tedious. A workshop makes ambience reusable, discoverable and easier to share.
That is useful for casual pilots and virtual airlines alike. A pilot can quickly add a mood to a route, while a group can keep a more consistent passenger experience across several members.