Leaving aside the balancing issues that plagued Wintergrasp early on (Tenacity ftl), I really enjoyed Wintergrasp. There were lots of ways to participate which kept it fresh. If you wanted to sit in a tower, eat lunch and pew-pew with a cannon that was fine. If you wanted to run with the zerg and kill the opposing faction, that was fine. If you wanted to protect or capture nodes, that was fine. If wanted to run around in tank and blow crap up, that was fine. Big, sprawling, evenly matched Wintergrasp battles were the closest the game has come to classic AV. So I'm cool with bringing it back.
Tol Barad on the other hand I could do without. I don't miss that terribly designed zergfest.
Mike makes a good point about the VOA and BH being the real reason folks did Wintergrasp and Tol Barad. The best battles were always mid-week after the reset. Without the carrot, there may not be as much interest in those old sticks.
I have no opinion on the WOW security lawsuit. As a guild officer, I've opened many, many tickets regarding hacked accounts of guild members. I don't doubt at all that Blizzard takes account security seriously, but I do think authenticators should be bundled with the game by default. I don't think the burden should be on the players to opt into the system. Also I think it's worth pointing out that the McDonald's coffee lawsuit is not the the frivolous affair urban legend would have folks believe. The poor woman at the center of the case was hospitalized with third degree burns and required skin grafts. I'm sure it was no joke to her.