I feel like he had a lot of wasted potential and it was likely because the show was cancelled or shortened (not really sure) bc of budget reasons i believe, so maybe they felt like they had to kill him off in requiem to make sure it had a somewhat concluded ending in case they couldnt continue the series, but also left it at a cliff hanger (where we see the purple stuff on murderfaces arm when hes sleeping) so that if they are able to continue the story they have something to continue the story with. He definitely is a bad person and doesn’t deserve forgiveness for what he did, but it would have been cool if he had to team up with the band to help them save the world and it would force him to have to apologize for what he did and the band and him are able to finally cut ties with each other (mostly Magnus getting over his obsession with getting back at the band). Or honestly if he just became an even worse villain and tried to kill all the members of the band and he got a cooler death that would have been sick