As much as I dislike proprietary protocols, I'd be greatly in favour of Apple deciding to make a replacement for Bluetooth that works with all their products - and Just Works. It'd be no use to me, as my only Apple product currently is an iPhone, but if I saw that Appletooth Just Worked, I'd be looking at diving (back) into their ecosystem.

I know some people are saying Bluetooth works perfectly between their Apple products, but plenty of people are saying it doesn't, too.