First of all excuse me for my English.

I am one who thinks that rolling release distributions sounds the future. Why?
Because the user no longer has to worry about are system and benefits from recent versions of software.

Now on libraries, xorg etc.... it may very well release a new version for inclusion.
So imagine every six months a new version but in the meantime the software most used to constantly updated in a repository (this is equivalent to ubuntu ppa in some ways but stable and under control).

So I think it would be nice to create a repository "rolling release" containing software commonly used example: firefox, vlc, liferea, thunderbird, mplayer.

As you will not break the system because no library, xorg etc. will be updated.

+1 repository "rolling release" commonly used for software (vlc, smplayer etc ...)