Although I reached 70 a while back, I've only recently felt I've reached a plateau. No, not Elemental Plateau! I'm just at a place where there's nothing big to look forward to in my near future. Just like how 60 was when the expansion seemed to be but a twinkle in a developer's eye.
While seeing the inside of the Black Temple or experiencing the Battle of Mt. Hyjal is no longer as far-fetched as it seemed when they first introduced it. We're far from setting foot in either. I have acquired decent crafted items and drops so that at the level and frequency I raid will last me a long time. And I've done what is probably the biggest grind at 70 - the epic flying skill. I've even leveled another character to 70.
Am I bored with the game like I was after being 60 for a while? Not really, and I think I have to attribute it in part to being a raider. There's also pvp - but I only do enough to get a few items I want. Unless you are a non-raider, who hit 70 did all the solo/group quests they could do and find the current end game unappealing - or a hardcore raider, like the players in Death & Taxes who completed all of Black Temple and Mt. Hyjal and are now bored of farming the new content you still find raiding keeping you busy.
But like I mentioned, our guild, with only a few bosses downed in Serpentshrine Cavern and The Eye combined, there is still plenty for us to do. Only thing is bosses don't fall quickly, so gear will be a while coming as well. It's just like we were with AQ40 and Naxxramas. That feeling that we are cycling a little in place. For me it is a bit of a breather. I'm not bored, but I'm also not feeling strained playing level/gear catchup. I'm just at a plateau...settling in for a while. Blizzard won't use me to write a blurb to sell their game, but they aren't losing me as a customer either.
Ghosts of Saltmarsh Color Maps
12 hours ago