Hello again
@MrGold4,
Thanks again for suggesting this to us. We really do value any feedback or suggestions from players!
Unfortunately, we will have to decline this suggestion. Even though we would really like to do this, it's not something we can do successfully. There are two main reasons for this.
Firstly, it's not possible to add "models" to already existing minecraft entities which is what the unicorn currently is as it is a horse. Secondly, there's the issue that while a model could be made for a unicorn, the legs of this model would not move like the horse entity does. Therefore, it would end up not being a proper mob and it would be less realistic in motion than the current unicorn mob.
I hope this makes sense and does not discourage you from creating more suggestions in the future!
Have a great day!