The only stinker on the Knotfest Aus announcement IMO is Slaughter to Prevail. If they want Deathcore get someone good - Lorna Shore, Suicide Silence, Carnifex, Whitechapel, Fit for an Autopsy, Paleface Swiss, etc.
Someone in the glasto thread mentioned that Chapelle is exclusive to R+L, has that been discussed on here? Only post I can see is the one that mentions her and Hozier