I've played less than most "elite" people, I have a full time job which is during grave shift and I've got to get a full 8 hours of sleep or else I'm worthless. That being said, I think anything above 2200 is fine. Some people just aren't bothered with achievements. Granted if I see someone in crucible with a higher grimoire (3300+) then I'll know that they're at least [i]trying[/i] to be proficient at crucible. In PVE however, I don't give a crap about their grimoire. Some people like to get all the achievements, some people just want to play the game, have fun, and not worry about set goals. And that's perfectly fine.