The ability to re-queue last queries.

[j-a-s-o-n-g]

In Alfred, you're able to use Alt + up arrow to go to your previous query, then again to go to the one before that. I know FlowLauncher already stores like the last 10 queries in the history config file, so it should be fairly easy to implement.

Easy option: Alt+Up goes to previous queries.

Harder option: Alt+Up cycles back, Alt+Down cycles forwards.

Superstar option: In settings, set keybinds for cycling back and forward, then have those work as mentioned above.