Yes, material components are used in making a scroll. I agree with both sides but I also see that Larian will not lock the revive spells to the proper classes due to their design philosophy.
A good way to do it could be what Pathfinder:Kingsmaker and Wrath do, which is the first death puts you on Death's Door. You get up at 1 hp but retain the deaths door condition, where if you die again before its cured, you die die, thus need revive. This could be put on the easiest difficulty. Then the normal/hard mode could be the proper rules.
Everyone being able to use the combat Revivify isn't that powerful without a way to heal up, and its already the most accessible. Raise Dead, Reincarnation, Resurrection, True Resurrection, and (Torm forbid) Wish should be left to their actual classes.
