In fairness, if you wanted insight into the playerbase's distaste around watching a WAR player solo a boss in current content while everyone else watches, WL provides an excellent case study of this. I think even the people who managed to find something likeable about her character cringed at that moment.

The biggest risk impact will be on new players, because they're the ones most likely to die and be forced to sit around while a WAR solos fights in casual content over a course of 20 minutes. If SE wants to keep that cohort of players, the answer is pretty obvious. They might as well forget about their 'Hall of the Intermediate' and reworks of old content. You aren't keeping those players.