HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Dear brother, I've wanted to reach out to you for a long time and ask if it is possible to exclude the artifacts Boots of Levitation, Dolphin Charm, and Captain's Hat (not in Dragon Utopia!) from being placed on maps... since all templates are waterless, and when playing on Jebus Cross, I'm tired of seeing these artifacts on the ground, and their equivalent value is quite serious as far as I understand... so I very much ask you to consider this request

You can't ban artifacts only in certain places. Either a full ban on the map or they are allowed... But imho these artifacts are only annoying on Jebus Cross; on SM, things like obelisks or imp-//-s are more annoying, as they provide little use but have high value...

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Although I'm probably wrong; if the Poles have already thought of giving candies instead of angels in cans, then maybe it is possible somehow...

if you push yourself - anything is possible.
but I see no point in leaving them only in some places. The labor costs aren't worth it. If they are to be removed from the map - then remove them completely. My imho.
The Poles thought of editing game resources - which introduces chaos into an online game. Especially when one person has changes and another doesn't.

Regarding the HD mod, I'm not sure if this change can go in there. It's not exactly intended for that. But as a mod, like for example for the m200 tournament, it can be implemented without problems. True, if you breed a bunch of mini-mods / edits - then confusion will follow. So if gameplay is to be changed - do it with one mod containing experimental features.

In principle, I would be all for playing without obelisks, heal forts, cartographers, water artifacts; I'd also add water spells myself, since they are either useless or there's nowhere to use them anyway. The question is - how will the community react. As for making a mod if desired - it's not that hard, but it requires time.

I would suggest creating a thread to discuss such features, if there are more posts like this, because imho they don't relate directly to the HD mod.
P.S. Everything is implementable, provided there is the desire and time.