Title says it all, pretty much, but here’s some details…
You could jump to 10 different patterns in the sequencer by typing, for example: Shift+ a number from 0 to 9. The number on the numpad represents the pattern number. You could only control 10 patterns, the ones numbered 0 to 9, but it would still be very nice, IMO.
Now Shift+0-9 would jump to a pattern in the same way that Ctrl+up/down does, aka during live playback it would “maintain the vertical position from the previous pattern”. But Alt+0-9 would trigger a pattern from the beginning, just like RAlt does. This Alt+0-9 would come very handy as well, IMO. Actually that’s the one I’d use most, like for previewing different patterns… and for jamming with patterns like loops…