So, what's the problem? The interface part is an add-on and is completely independent of the rest of the mod's content.
The reason for its use (and extending the scale to the maximum) is purely for practical convenience. Those who are tired of endlessly scrolling the scale with tiny arrows, fearing to miss the mark, will appreciate it. Those who are tired of periodically scrolling through short logs will also appreciate it. Finally, those who have ever confused the icons of their own and enemy creatures on the scale because the background color on them is practically indistinguishable (due to the fact that the entire icon is occupied without a background - like the High Witch or High Devil), will also appreciate the practical convenience of colored bars.

How can you even confuse the icons? They are all different. Besides, the circle here is much more convenient than this colorful mess and is not inferior in practicality. Maybe it doesn't fit in perfectly, but it doesn't turn the interface into such a disaster. And a good, pleasant interface is one of the features of Heroes 5. Although, if it's not integrated, it doesn't matter anyway. I'm only interested in offline play with the computer, and duels and difficulties are secondary.

The description mods are an example of implementation. In the original, everything was described sparingly, and the game's lore was meager.

The slider sounds should definitely be removed. It's an annoying sound that drives you crazy in the menu. And the menu is also part of the game.

Removing the "end of turn" message is also a must-have. Only a complete degenerate wouldn't be able to look at the hero's turn scale, so the meaning of this message is absolutely unclear. It just keeps popping up in front of your eyes. It creates the impression that the game considers the user an idiot.