A.k.a. sane sloppy focus? I think I'd find it very confusing if my mouse position (which is effectively arbitrary when I'm not mousing) affected where my typing was going to appear.
I guess this depends on habit: once used to "real" sloppy focus, it is really difficult to live without it. At the same time, I've seen tons of people get confused when using my computer and accidentally moving the mouse. Still, worth a try if you haven't (and kind of impossible with OSX).
