So how is wintergrasp playing out?

[Talamarr]

I'm just seeing a lot of frustration from people trying to box EVERYTHING, and there's no need to do that.

I'm agree 100% with this. There is just some things that are easier/more fun to single box and round-robin your toons (like some of the vehicle quests or PvP'ing). Another great thing about multi-boxing; you don't give up ANYTHING in the single play world by having multiple accounts.