Customisable Map Stash

Allow us to customize each button on the map stash. When right-clicking the level 1-16 buttons, display a level selection menu so we can adjust buttons to higher levels if needed (see pic https://ibb.co/Mx26QkWt). Otherwise, 13 buttons (including their pages) remain useless for many of us who don’t store lower-level maps.
You are not fooling me again to pay 15 euro to use just 3 categories out of 16.