Well, as it is these applications need to graduate to the Nokia repository (where e.g. Qt Mobility sits ATM). This will kill normal evolution of the package on extras side, so if the package will continue evolving the "extras" instance of the package needs to be renamed to -experimental or somesuch and the library files installed in a different directory.
What we need is a process how we choose what packages we will "bless" to the nokia repository, and when. If it's currently just a handful of packages, we can go through an accelerated "special case" process and request this from the guy that has the power to do this. If we need an ongoing process, Community Council may be the instance that could request packages to be promoted there every now and then.