because with the livery editor, we can have any shape of number backdrop. In GT6, we had round or square background. Also, some people have a number, and other people have the same number... just the way life works. Not everyone will be in the same room/division all the time. If 2 people with the same number end up in the same room, we could just have their livery have a little 'a' or 'b' or whatever after the number which you sometimes see on real cars
sure, but in the example I provided, maybe it can relate to the class of the individual... so for @NAACS he could have a little F