@Caleb I don't think I ever got to a stage where I turned any multi language stuff on, so I never saw that.
"move sites between servers", this is the thing that is supposed to become easier with CMI, but it takes a bit of getting used to. Do you usually work with features?
"move between versions of the beta" Yeah, that's my blocker. Last I checked, this wasn't supported at all, so there's no right end of the snake at all ;)