Surely the main difference between NG+ catagories and just the new game ones is having the class or cups already completed and having like the best car and fully upgraded. Otherwise isn't it just the same as new game, but you can buy the better cars you get from doing Carnage mode. If I'm missing something about it then by all means tell me, but new game plus and new game catagories just seem the same catagory but NG+ you can do Carnage mode, not really enough to justify a different catagory with the current ruleset.