Assuming each "upgrade" increases capacity, would it be possible to add a chart of what each upgrade level changes to the description?
Also, is that configurable?
Thanks!

I see. This can be done as well!
I might still introduce the tooltip on the items so that people can understand that in-game.

Upgrade sizes are not configurable.
However, I could technically add an item description such as "Size increases: 27 -> 54".
I will consider adding this in the next update.

Ah sorry, I was unclear I just meant that I'd like to see the upgrade changes on the Curseforge Mod description page.
Something like
Iron 27
Gold 54
Emerald 81
etc

Thanks for the quick response though, cheers!

The size list has been added on Curseforge!