The comments are a symptom. One easily ameliorated by the existing comment moderation system once the cause is addressed.
The real place "controversy" needs to be addressed is the stories. No amount of comment moderation will suffice to deal with the squabbles created by mdsolar's anti-nook crap, global warming click bait and gamer gate grievance mongering, among many other sad themes that have damaged Slashdot. That stuff needs to stop so the malcontents that live for it go away and let the place heal.
And no, just turning over story selection to the (existing) crowd will not work. They'll squander their employers time indulging their favorite cause and keep feeding in the same click bait. What is needed is a few people with good judgement and some patience to allow time for recovery.
As I write this it occurred to me to survey the last few days worth of stories. Except for the Clinton coin toss mistake — which promptly descended into a giant flame fest — it looks pretty good. Keep that up, add some more Linux/BSD/MCU/etc. related stories and something good could happen.
If I'm right and there really has been an editorial change, keep it to yourselves. Talking about it will just produce a giant sh*t storm.