I totally agree with @TheTechnobear as well. Maybe I’m just not communicating effectively? I’m sorry for that.
I just don’t think Apple will budge on device support. They already have their MIFi program in place for peripherals, which evidently is a real pain, but that’s the way they want it. Perhaps I’m pessimistic? I suspect if I were to bring up Monome or similar devices, the response would be “we have class compliant midi support, use that.”
To clarify one point: there is no contradiction between my suggestion that you build a controller which is plug-and-play with some hosts and advertising a controller which is plug-and-play with all hosts. Know what I mean? Let’s not get bogged down in the semantics of plug-and-play.
Some sort of little monome adapter would be the way to go, given the desires on your end. Seems a bit inelegant, but hey if it works, cool 