Oh Strobe... you're the last person I'd expect to say this.
Of course, at this point Disney/Pixar is spending a LOT of money to dub the film, and while I agree that it is a compromise, it isn't a big one.
For one, there isn't much talking in the film. Now I'm not saying it is Wall-E, but this is all about looking at amazing 2D animation, not about discussing philosophy. I imagine you might be worried since there are parallels to Totoro that we might have two screaming kids for the whole film, but it wasn't dubbed by those folks, and pretty restrained.
My real argument however is that this is some of Miyzaki's best animation--and this sort of thing ONLY works on the big screen. Yes, you can wait for the blue ray or whatever, but I can tell you when I project movies onto a wall, it only begins to capture what the animated movie was designed to do. If you want to be swallowed up by the animation, you need to go see this now, while it is still in the theatre.
I also don't think it hurts to support Miyazaki in the theatrical run--telling Pixar/Disney with your $$$ that we want to be able to see films like this in a theatre. Hell, it is even a vote for hand animation.