A button that says "I'm migrating to not-Apple". Siri: Are you sure? Me: Yes. Siri: Please stay with me, I need you. Me. Nope.

Each generation of these circular accelerators just gets bigger and bigger (yes, for technical reasons like electron energy dissipation as it moves fast in a circle). Physicists should stop doing this incremental size-increase crap and just go for the maximum. The incremental approach would appear to cost more money in the long run.