Here is my thing.... If you placed your ad in LFG...make sure to say..."I am Titan without defender class maxed out." OR simply start your own fireteam. I have completed the raid with 6 hunters...in fact it was the fastest Raid I ever done...the back to back to back to back to back Tethers on the first two bosses are amazing. at the same time...I have played on a fireteam with Three defenders.....Two for mid (one blessing, one weapons) and the other titan runs blessing for popping bubble in Shade... to me it's overkill...but I know people who are dead set on that.