TL;DR
Implement an easy-to-access button to make longer sessions of map creating effortlessWhat ?
In the map creation you can click on the "Random Seed" button, which, combined with Auto Refresh enabled, gives you a rather fast way to cycle through possible maps.By giving the button his own hotkey (possibly "R" for Random/Refresh) it could help in situation
a) No Mouse input is needed and you can relax one hand while the other pushes a button (my left hand is on wasd even when idle, so no extra effort for this hand, while less effort for the other hand)
b) When you drag the generated map in the preview window to get to know the seed, you have to click on the Random Seed button after, by leaving the preview area. While not much effort, the suggested Hotkey would still help in being able to check out a map, then clicking the Random Seed Hotkey and continuing with the mouse where you left of, without leaving the preview area.
Why ?
It improves efficiency when generating many maps.It helps me being even lazier when playing the game.
It helps with repetitive strain injury