Could you illustrate what you said with screenshots? I'm not sure I understood you correctly. In particular, what is "Artifact exchange in the castle" and "Shows moves"? In my opinion, the most significant improvements to the game come from the HD mod, not HotA. HotA primarily introduces several different rules. Because of this, for example, in terms of movement on water (when completing a turn on water occurs in the active cell of the visited object), SoD RPG maps may be impassable in some places in HotA.