Ok so this one is merely cosmetic. It has zero impact on the gameplay.
However its also effortless to implement
You know how Bayerische Motoren Werke is known as BMW? And Fabbrica Italiana Automobili Torino is known as FIAT?
Well my suggestion is you have the option to use the acronym of your brand name, if you want to.
Of course, this may prove useless, depending on the decisions that will be made regarding logo, logo stamping in the car and engine etc. But imagining stuff like this gets to the final game it would be a nice thing to have, considering it is a tradition in the automobile industry. Even if its merely cosmetic, as I said