[@Lucius Cypher] There's varying rank of divinity I would believe that angels in this universe are lower on the rank compared to actual bosses like Momonga crushes. But that's just my belief on the matter. 

As for Resurrection while it is brought up in the series it is at the expense of a ton of gold, and it was somewhat for the sake of keeping the status quo. While I have no problem with it working in the show in a roleplay setting it invites the prospect of there being no consequences for poor player choices, in a setting that is already usually heavily weighed in our favor as the strongest npc's we will see for awhile are probably around level 50, maybe 60. I don't want the prospect of Resurrection to be a choice for poor player choices, or to be used as some sort of bizarre plot point. Necromancy will be a thing as once we get rolling the will be tales of a necromancer a long way from our current point but that character is for a later time. Its one thing to heal grievous wounds its another thing to put a guy's head back on after he had it cut off, or he's lost most of his blood.