the most optimal option for the library in the tower has long been suggested:
Rebuilding does not change the spells that were added to the slots after the library was built.
1) There is no need to ban the library.
2) It provides its own bonus and allows you to upgrade mages.
3) Rebuilding works in the tower, just like in other cities (i.e., 5 level 1 slots, 4 level 2 slots, 3 level 3 slots, 2 level 4 slots, and 1 level 5 slot are rebuilt).
I hope that this is exactly the option that will be implemented in the next Heroes & Might & Magic patch.
and decouple the rebuilding from the need to first build a Guild Hall level 5. Otherwise, its scope of application is significantly reduced.

