A configurable button to control game speed.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
you could have just used my mod ;-) https://mods.factorio.com/mod/Kux-SpeedButtons
it automatically increases the speed when you craft
And a fine mod it is, just a personal preference.
I love how it's simple - just one button (also compatible with GUI style!) and that's all. Although a hotkeys to increase/decrease time would be useful - I could assign them to my mouse and use it even without aiming for the button :)
Version 0.2.5 0.2.6 has been uploaded, adding keyboard shortcuts.