I think the key here is that Vincent said "I found when I was designing my
basic moves that if I had to write "on a miss...," it meant that I hadn't fully generalized the move to myself."
Basic moves for a hack definitely shouldn't have "miss" clauses, but I think custom moves that an MC makes for a game absolutely can have "miss" clauses, and it's not a weakness. Also class moves, like Johnstone shows. Because custom (and class, depending) moves are for a specific situation.
I would love it if someone had an example move that they felt needed "on a miss..." instructions so we could talk about that.
How bout this one, Bret?
When you shoot up with the drugs that Lala made, roll+cool.
On a 10+, you take +1 forward when opening your brain.
On a 7-9, you take +1 forward when opening your brain, but the next thing you do is Acting Under Fire.
On a miss, you pass out and wake up who the fuck knows where, and aren't you missing something?