And if it gets fixed unofficially, would that be good enough? Assuming we can get a decent-ish Diablo-on-steroids out, you'll have a far better chance of fixing any problems you see yourself, or persuading others that they are important and fixing them en-mass.

I can (sort of) understand your frustration (though I have various devices that have limitations/problems which get very very infrequent firmware updates, which usually cause more problems than they solve too).