Heroes of Might & Magic III: Horn of the Abyss

I don't like the building in 3.58 where you can improve artifacts; for some reason, I never use it, but how do others use it?

That's just your personal preference; I use it if I have extra gold and if the building is nearby.
But if we discuss each building in the game, it will take a lot of time, and it's not even clear why. If you're that interested, create a topic like, "What do you think of the new buildings in Heroes of Might and Magic?"