How to change Spacer default value

I’d like to know if anyone knows a way to change the spacer block’s default value of 100 px, either by changing gutenberg’s code (but that would be written over by future updates I guess), either with a plugin?

Being able to do that would save so much time. If our default value was preset to our most used spacer height we’d only have to click once instead of 1+readjust by dragging every time…