sounds good, but i think figuring how to divide it up would need to be smarter. popcon keeps track of what you have installed, and whether it has been used recently.
but:
i have plenty of things installed that I never use.
i have gnome-terminal(actually mate-terminal) open all the time, but i consider it feature complete, and not in any real need of funding.
some things are split into several packages, and some arn't
maybe there could be a set of sliders to adjust, with a suggestion based on your installed apps and usage. and system packages bundled together, eg
* Ubuntu infrestucture (hosting, servers)
* Linux kernel
* Core system software (compilers, libraries)
* Mozilla
* GNOME
* KDE
* gimp
* inkscape
...