So, this is just an opinion. But if you can change the color of the NPC's name Color after training them enough, why can't we? I know there is kinda a set thing where your name is a certain color based on gender. But if we can change it for NPC's, I feel like we should be able to do the same.
I also think it would be cool if we could add small descriptions to our characters, like how you can change the ones NPC's have. For example, my character is a fluffy dog named Frenzy. so a description could be [One of the inmates, a Fluffy canine with a cute smile.] Or whatever, you get the point.