Anyways, back to MUI:
Do you think Goku will ever do it at will?
Because it can lead to some pretty amusing scenarios if he doesn't. I mean, Vegeta is a pretty sharp cookie, so I can see something like this happening:
Beerus: Time for our rematch. Turn Ultra Instinct.
Goku: I told you. I did that by accident!
Beerus: TURN ULTRA UNSTINCT, OR I BLOW UP THE EARTH!
Vegeta: *In a panic*. W-wait! Kakarot, think back. What triggered the transformation!
Whis: It seemed to happen every time he was near death.
Vegeta: Near death, you say?
Bulma, bring out the food we were saving for Beerus!
Beerus: whaaat!? That's mine Vegeta!
Vegeta: Just trust me. You want to fight Ultra Instinct, don't you?
*Goku starts gorging himself like he hasn't eaten in a year*
Whis: Good grief.
Beerus: I think I lost my appetite..
Vegeta: That's right.. Juust keep eating. Try the tender pork and fi-FINAL FLAAAASH!
And any time they need UI, it would be some new way to almost kill him. 🙂