Yep, nail on the head. You should never, ever throw away user input. All reasonable: Cut the anim short on input, respond during anim, buffer the input and res

Yep, nail on the head. You should never, ever throw away user input. All reasonable: Cut the anim short on input, respond during anim, buffer the input and respond after the anim. But whatever you do, don't just throw out the user input! It's a terrible experience when your phone ignores you. It feels buggy, and creates a sense of anxiety/hesitation when using your phone. Apple used to be really good at this, but they lost the religion starting in 7...