Zombie horse

The zombie horse is a mob that was added, but the idea was wasted a lot. It seems to me that this horse would be nice to see it in the suevival or that it would be nice to have that little danger that our horse is a zombie, it would make us have to take care of them even more. Well, my idea is that at night like any other hostile mob these horses could appear, either alone or mounted. We could not ride the horses that appear at night, they would only attack us; the only way we would have to have a zombie horse under our power would be that one of the horses we already have is transformed, having the idea that it would remember us as its owners/companions. These zombies would not attack their owner, but would attack any other player or villager, as long as they are not being ridden or tied with reins. Finally I thank you for reading my idea, and I hope I'm not the only one who would like to see this mob in survival.