I can't look that objectively at music (probably why I suck at writing reviews and such). Originality is great, but to me if something sounds good, and isn't a total rip off then familiarity isn't a problem. There's a million bands out there, it's not the easiest thing in the world to come up with something completely original.
The first Carcass album I heard was Heartwork, and it still remains my favorite. Although I said I liked Swansong, I hope the new album will be likened more to Necroticism and/or Heartwork.
I haven't taken the time to listen to Orphaned Land properly yet. I should do that soon