Heh @acs - if the folks you were handing it out to were dogs, I could certainly see that as a delightful summertime treat!
The other thought I had on freezing is that it would actually be a good way to save this for another day...maybe you're on a diet...want to save this for another time (as the jus has a high fat and moisture content, it will freeze quite well!!)
Definitely need to make this into gravy. Whether you're using a starch or a flour, it doesn't take much time in a saucepan to turn your jus into something wonderful. Adding a little red wine or sherry can add just enough contrast and depth to enrich its addition to your meal.