Describe the feature you have in mind.

An electrum horse armor. Made by smithing an electrum ingot into a diamond horse armor. It makes horses who wear it slightly faster

Does this solve a particular problem?

It would make horses more viable, as well as giving a really cool endgame item to work towards to make your horse cooler. It is actually relevant, makes diamond horse armor a lot more valuable, also it's compatibility for caverns and chasms who adds netherite and necromium horse armor please dev please

Yes I 100% agree this should be added