I mostly solo but don't see any reason to make this quest or any others any more solo friendly they are now. Others can do it, and surely the wiki has info on how to do that if you really feel the need to run it alone. I just skip what isn't attractive to run, most of the time that includes quests that require things like several levers or runes done at once. Not like experience is short anymore, farm a quest a few times now then on to another and so on. If need be you just rerun those quests 18 hours later for more exp. Keep the group required stuff, after all this is a MMO game regardless of how much folks like to run solo.