But then you also give them terrain that would allow a clever wizard to position themself such that they can see the epicenter of the fireball without having line of sight to the targets themselves

Magic? Nothing to blink twice at!

Hair color that’s fun for the player? Realism ruined.

I’m not a furry for playing a tabaxi! I mean, I very much am a furry, but playing a tabaxi has nothing to do with it