Though I generally do agree with Preach's commentary, I can't really say I enjoy the game any less now than I did back then. Okay, well, I CAN say that, but not because of his reasons. I acknowledge them and would have no qualms with getting back to the way things were, but I don't mind the way they're headed either. As long as future expansions have a cohesive atmosphere and aren't thematic cluster!@#$s of boring, uninspired locations (save Uldum, I love that place), I'm set. Dicking around on the Beta this past week, I can say that I think MoP's got some great things going for it.
Simply put, I understand that that feeling of awe's never going to come back, and it's sad, but at the same time, I feel like it's also a bit of rose-tinted nostalgia. A vast majority of us weren't ever around in Vanilla, but a decent chunk of us started out in Burning Crusade.
A lot of that feeling of awe and inspiration I got was purely from being new to the game. I didn't understand what hardcore progression raiding was, so I thought it was some holy-crap-I'll-never-be-that-awesome stuff.
I spent all my time on good old Veyne, healing dumbasses that stood in fire. I couldn't even afford regular respecs to even know how my class's own DPS spec worked. I did eventually get Rhayge level capped, but there was a huge sense of mystery surrounding what EVERYONE ELSE was doing behind their keyboards in my dungeon groups and raids. I didn't understand what it meant to be a Mage or a Warlock or a Paladin, etc...
6 years later, I've played the HELL out of this game. I'm sitting at 8/10 level capped characters with my Rogue and my Hunter not far off themselves. I worked my way up through the ranks of seriousness in the guilds I was in fairly quickly. I've raided as a healer, I've raided as damage dealer, and I've even raided a little bit as a tank. I've done PvP to the point of loathing.
Just about the only thing I haven't done is experience the whole Alliance thing.
So where the game is headed is just fine for me. Nothing Blizzard can do will ever bring that feeling back, because they weren't the ones that took it away from me. Where I am in the game, and in my life in general, is a place where I'd much rather prefer a "pick up and go" sort of approach to my leisure time. I work 40 hours a week, spend two hours each work day commuting, trying to maintain a solid workout schedule, and also trying to squeeze a few classes in where I can. When I play, I want to have a decent sense of challenge before me, but I also don't want to spend four hours a raid night bashing my face into a brick wall because the rest of my raid group was making the same mistakes over, and over, and over again. And I also want options, and not feel like I have to spend every minute of my game time playing one class.