Weekly heroic matchmaking is a disaster. I've never had even a single moderately decent teammate in an activity that's not even difficult. Now I'm forced to carry kids through the activity, getting 70-80% of the kills myself when before I could solo it in less time with less headaches. And you want to bring that to nightfalls/raids/PoE? No thanks. And please, spare me the 'optional matchmaking' plee. I guarantee that if they do ever bring matchmaking to these activities the next thing that will happen is waves of posts on the forums claiming the activities are too difficult for randomly formed party's of squeakers and geriatrics and the difficulty should be scaled down.