BigHugger: I would not call it graveyard in HS case. At least with cards like Mass Resurrection it definitely is not a proper graveyard thing. I played only one card game before HS, it had proper graveyard mechanics, therefore I wrote it could lead to completely new system in the game, because it really leaves you a lot of fun options.
Sheercold: We just did it to highlight that resurrection in general works differently, and more logically, outside of HS.