You would still need to maintain and manage the core distro. The packages in their would update and break the systme, you'd have lvm issues and what not.
Any way, care to give links to more on maeom/meegos architecture?
You still package and build an application separately for each distro version. And then the community tests it before it goes to the stable apps repo. So broken packages (either by packaging, or by app not functioning properly) are unlikely to pass QA.
So if your package conflicts with something, either fix that issue or don't release for that distro versio.
Any way, care to give links to more on maeom/meegos architecture?