3. I don't know if you have attempted to level a new character since Cataclysm was released or not,....
I also enjoyed my original playthrough, but that was before Cataclysm. It is nearly impossible to repeat that now thanks to the way the game has been redesigned for lower level characters.
Been playing since vanilla. Had four lv60 characters in vanilla, five or six lv70 characters in BC, got most of them to 80 in Wrath.... got a couple to 85, and started getting the others up in Cata, but I got distracted by the two new characters that I leveled up by questing through the updated "old world". Seeing all the new questlines was fun. (Almost all of that leveling was outside dungeons or battlegrounds. I think I did under a dozen dungeon runs in BC, and less than 20 in Wrath. Total. And I've done a grand total of about 4-5 raids - all pickup-groups for the "boxed" raids in the first round of Wrath.... the first Wintergrasp boss, and Sartharion 0D.)
4. Again, see 3. If you aren't at level cap, then you aren't playing WoW.
Then, like the other poster, I've apparently spent an awful lot of time not playing WoW. :shrug:
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I guess what I'm basically saying is.... sure, it's fine if you evolve to the point of "grind character to level cap; study class guides; keybind everything for Max Efficiency!? Raid, raid, raid..."
But to suggest to a new player, unfamiliar with MMOs, to immediately adopt that playstyle as "the right way"? That seems wrong. Just because you think that's "the right way" to play, doesn't mean everyone else will.