Hi Philofmars,
Strangely, this idea has never occurred to me. You're right, there is a ton of artists in the Apple brand. Hopefully Apples "iPad Pro" will have a real stylus. Interesting thought, I will definitely need to talk to Takashi about this.
How would you see this working currently? (on what devices/hardware) Any info you can share on how you would envision this would be greatly appreciated.