I see no real reason to feed it back to iOS. If Apple manages to integrate iOS apps into macOS well, I can see them shipping iPads/iPhones with i+macOS. Both OS

I see no real reason to feed it back to iOS. If Apple manages to integrate iOS apps into macOS well, I can see them shipping iPads/iPhones with i+macOS. Both OS's run the same kernel anyways so why not just tweak them a bit, glue the environments together, and have one run a superset of apps? Apple's superior UX team and control over app distribution makes them much more likely to succeed than when MS tried to go down a similar road. Even their long-term investment in LLVM helps here. One can only hope us consumers don't end up with a more locked down macOS as a result.