MM for normal mode, no MM for hard mode, the casuals get to experience the entire story of the game they purchased, and if you feel like you want to be a try hard elitist, just change to HM and pick up a fireteam on /r/fireteams, the 100, or w/e "social gathering" site you want to use. Move raid challenges to HM also, that way the try hard elitist can have something special to keep them busy and forget that MM is in normal mode.
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Elitists won't go for it. Why? Because they don't WANT other people playing the raid at all. If they play they get gear and it opens the door for then possibly playing the hard raid. Watch. You will see them here making up excuses.