For whoever is interested I tossed together a script to identify packages that would immediately benefit from slot operator dependencies but which are not doing so.
The list can be found at: http://dev.gentoo.org/~rich0/missedslotops.txt This was generated by: https://github.com/rich0/finddepslotops Feel free to make use of either as you see fit, make improvements, submit improvements, fork, whatever. If one of your packages is on the list feel free to update it! (And yes, I realize that in many cases this may have been done with newer versions of the packages not on the list - I didn't make any attempts to filter that out.) Also, I'm sure I've used the portage API in less-than-ideal ways. Having not really used it before this was half a learning exercise. Feel free to send me suggestions/pointers. If somebody knows of an easy way to process metadata in python (short of just parsing the xml myself) let me know - I didn't see any kind of API for that. Rich