Easy change parameters according to size or scale

[HHbomb]

Hi,

I'd be nice to be able to change all parameters of a modifier according of the size of the object.
For exemple, tyMultifracture. ( I work in meters )
If I make a 20m x 20m x 20m box I can use it.
If I make a 1m x 1m x 1m box, I'm unable to use it ( i'm looking for parameters to change and I didn't find yet )

I I have a scene in centimeters and I need to use some assets in a scene in meters I have the same problem.

A scale option that change all parameters at once. Or a script, ....

Hope it make sense.
Thank you for your hard work.

Best regards.