The bottom two changes were all that were necessary, in my opinion. Give new players a stay of execution and let players who aren't interested in the PvP aspect of the event avoid it, while players who want to ghoul it up can go absolutely ballistic without having to deal with people who don't want to partake whining. I feel like nerfing the ghouls further when they're already opt-in now is needless.
- - - Updated - - -
Well, given the sheer number of systems changes being brought in with Shadowlands prepatch, between the level squish, unpruning, Chromie Time, spec revamps/updates, alongside the PvE side of the event in Northrend and Marris Stead, there's plenty to keep people entertained if they're not interested in the PvP side of the event.