When duplicating a frame, it would be great to change the default spacing in between frames from 40 px. Maybe changing it like the nudge amount.

While creating small mobile screens, 40 px is a decent amount to give each screen space. When creating larger desktop screens, I often use 80 px or more in between frames. It takes time to organize my screens in a precise way, so being able to adjust that spacing would be useful when rapidly creating and updating screens in a design without having to manually move them each time.