I mean, they're not visual mods, and they actually hinder you, and without any mod that increases your score, stuff gets kinda boring, the only cons that I can see it's that it would be unfair to the players who spent hours and hours reaching the top 50, but that also would be good because it adds another element of competition to the game, in all the other modes you see the top players doing a lot of crazy stuff with their mods, players topping each other with different combinations of mods, here the only one that is useful is PF, and only ones who use it are the plebs like me that try to reach #50.