If they aren’t then they should close the megathread and stop misleading anyone who reads the thread’s main post that claims they are reading feedback and appreciate it. If Mercy to them is fine then megathread should be closed, simple as that.
But that’s not really true unfortunately, if it were then they’d be discussing some of the feedback and actually looking into ways they can improve Overwatch. The megathreads have served no real purpose other than to waste time of both the members, those who took the time to come up with ideas and submit feedback and discuss it with other members, and the forum staff, who have been moving Mercy related discussions into the megathread on a daily basis.