|have you seen the number of wishlist bugs for apt…
it could be good though. *equally* it could screw your setup in just as many ways as the present system (and more obscurely). for example,
source A takes preference over sid. It contains and older version of libA **cough** bonobo **cough**
you want package B from sid but it depends on a newer version of libA. libA is NOT EVEN VISIBLE NOW to your package manager and apt-get throws a tantrum that looks like sids fault.
the only way to get round this is to have *TWO* versions of the same package in the dependency database (i think not).
now imagine the same setup with progeny’s rather larger source list (and more important apps that could stall).
it would be *messy* AND very complex to implement in apt.
no one said apt-get was perfect or even great (it’s the unstable tree with carefully checked dependencies that rocks).