Yes, the same problem here. The biggest part of my kin is already 75, and they're not interested in running In Their Absence instances. And to find a group for these quests is nearly impossible, alas.
My tiny kin has been running those at level 75. Partly because we've never done the instances, but.... they are fantastic instances for relic farming! If you've got kin working on their shiny new Legendary Items--the ones that will be growing with them forever and ever until level 85--then the Absence instances should definitely be added to their "to-do" lists.
I have never done these either. At the time when they put all their efforts into Free 2 Play launch there wasnt much going on at end game. Instead of doing nothing or not playing we rolled on the new servers. When these were launched we werent 65 yet and by the time we hit 65 we skipped these in favor of Epics and new content.
My tiny kin has been running those at level 75. Partly because we've never done the instances, but.... they are fantastic instances for relic farming! If you've got kin working on their shiny new Legendary Items--the ones that will be growing with them forever and ever until level 85--then the Absence instances should definitely be added to their "to-do" lists.
I know this thread is a few weeks old now, and may no longer apply, but I know my kin is always willing to run any sort of instances. Contact Gilecas if you see me online and I will run the "In their Absence" quest line with you, and most likely have some kin that would run it too. As someone else had noted, it is a great source for t4 relics!
I am lv75 for quite a long time for now but if any of you see me online send me a tell, I can help. Did Stoneheight and Lost Temple this week, but I'm willing to do all these instances again. I also have to do some epilogues in Mirkwood. I'm a RK so I can heal or dps at your will!