Ah, I think this is the crux of the issue.

Speaking as somebody who has, in fact, never raided before, I'm quite glad that the new Endgame content is accessible to, well, people like me. Sure, ideally I'd like to do all the original and BC raid content *as well* but in practice that's going to be difficult, if only because now the level cap's off, finding a large group of people to come and do the Black Temple, all of whom are *exactly* level 70 and who *aren't* heading straight to Northrend is going to be next to impossible. Ultimately the only way to get the real "endgame" experience is going to be to play the actual endgame and there will always be people, like me, who have never done it before.

To put it another way, the assumption that the players have never raided before will, for many, many people, be correct.

Now I do, in fact, understand your concerns. Anything that's accessible to somebody like me is going to be trivial to somebody like you, but anything that's interesting to somebody like you is going to be impossible for somebody like me. Ideally people like me would be able to practice on the "old" endgame, but in practice it doesn't work like that and never has.

What this means is that the Endgame *will* actually have to stay at about the same level of difficulty, which means that from the perspective of guys like you it's going to get "easier" because you've done it all a hundred times before. Hopefully that will change in upcoming content patches.