Jared, you can make a Skuid Page that lets you do this! The object that lets you deal with assignments of package licenses to users is “UserPackageLicense”. Here is a page I threw together in about 10 minutes — yes it was that quick — that will let you do basically what you are after — it displays a list of users with a Skuid package license, ordered by Last Login Date ascending — meaning that the users who have either never logged in or who haven’t logged in in a really long time will show up on top, so that you can quickly revoke their license, freeing up the license for another user.
This page could be adapted in many ways but it’s a representative sample. Here is a link to get the XML for the page, which I’ve added to our Sample Pages repo:
https://bitbucket.org/skuid/samplepages/raw/b7cd058c66a5523e25bcf3f8d8d736071393df52/pages/SkuidLice…
