Heroes VII

Yeah, and together it's 4000, just like in all the games: Elder Hall 500 + Magistrate 500 + Town Hall 1000 + Capitol 2000. Total: 4000. Just like always.

Indeed. However, they could have avoided this nonsense and not reinvent the wheel. I don't see any point in making the player do mental math to sum up the bonuses from different tiers of the Town Hall when they could simply write the final number, as they did before, directly in the building description in the construction menu (yes, I know that the total income is already indicated on the overall city picture after the building is constructed, but it still doesn't make much sense). There's no logic to it, because these aren't separate little add-ons, but one building.
The only explanation that comes to mind is, "How else can we make things more complicated?" And this strange principle applies to many details in the game.

But what about walls? Towers? And extra guards? It doesn't give anything at all!

Extremely moderately useful fortifications, which are rarely built unless the player has an excess of resources or a castle near enemy territory.

Actually, no! The developers have introduced a new parameter, I don't remember what it's called, so I'll call it "knowledge" for now. So, to learn the 1st level of the Mage Guild, you don't need this "knowledge," to learn the 2nd level, you need 2 "knowledge," to learn the 3rd level, you need 5 "knowledge," and for the 4th Mage Guild, you need 7. You can earn this "knowledge" by leveling up magic, and leveling up any magic, even if you level up fire magic to the 1st level (novice), you get 1 "knowledge," level up to the 2nd level, and you get another x "knowledge." And this knowledge allows you to learn absolutely any spells.

Maybe it is, but if you haven't leveled up the element, then these spells are useless, you can't cast much with just magic power, and not everyone gets a bonus from it. So you'll just be dealing 5 initiative damage for one slow.