REWORK for the Academy. Is it needed or not?

I'll repeat myself, just in case... Let's create the next HD mod enhancement: 1. You build a Guildhall in some castle and gain certain spells. 2. When building a Guildhall in another castle, you ALWAYS receive at least 1 new spell at each Guildhall level, compared to building it in the first castle. 3. When building a Guildhall in the 3rd, and subsequent, castles, you ALWAYS receive at least 1 new spell at each Guildhall level. 4. This continues until all possible spells have been learned. After that, there will naturally be complete repetitions at all Guildhall levels. Thus, we get the following picture: 1. The classic "Shades of Darkness" (with chains of weak creatures on banks in distant zones, etc.) is not broken at all. The game remains absolutely the same. "SoD players" are happy. 2. Control is definitely not in the 2nd, but in the 6th castle. "Fortress players" are happy. 3. Additionally, the game becomes even more strategic in terms of defense and capturing seemingly unimportant castles.