Description:

Giving a config option to choose the base size for each drawers.

This is mostly a feature to give modpackers more options to work with.

For example, if I want to change the base size of compacting drawers to be closer to the simple compacting and basic drawers, but currently it's hardly possible.

Yes very much this! I am working on a modpack at the moment and I would love being able to change the storage amount for un-upgraded drawers.