It's pretty annoying when you join one of the dreadnaught strikes, particularly the brothers, only to lose your two other team members as soon as they grab the calcified fragment. Most times, replacements aren't provided. Leaving you to have wasted your time, and need to leave and try again. This happened to me 5 times in a row last night. And is happening roughly 80% of the time for me. This issue should probably be looked at. Maybe make it so that in order to receive those fragments, you must complete the strike. Not just find them and leave group.