What about making away to put potion on phantom makes you can tame it and mounting it so you can fly also after potion he doesn't die from sun ?
I think its a good idea but maybe it is a type of feature that should come from either beating the wither or the ender dragon. Also maybe a food source such as zombie flesh should be added so they need to be fed similiar to horses, wolves and foxes. Maybe a jousting weapon or a bow and arrow would make for a good idea. I support this idea. How is the phantom controlled?
I think they do have their purpose kind of same like the horse. Imagine in skywars being able to ride on phantoms in a similiar way like dragons but in the air. You could do jousting, dragon fire breathing, it opens up a whole slew of possibilities.