I think someone should get started on a quick port of gdebi, registered against .deb files so that people don't need to enable Red Pill mode for installing arbitrary packages from disk (e.g. downloads from forums), however with the ongoing push to Extras, the QA process etc. the number of times anybody should need to install a package in App Mgr which isn't in "user/" should be minimal.

The ones I can think of:

1. They want to install python-runtime so they can do some editing on the device. apt-get would do, or alternatively "python-runtime" could be the only "python-*" package available in user/programming, with an appropriate description.

qwerty12's example is another, but in that cirucmstance the author could just publish a small update of the main app which pulled in the new data package. Perhaps we should start thinking about (and creating a patch for) a way of marking a package "display for update, but not install".