there are a ton of incredible cute natural girls coming into the porn biz all the time - just check out FuckedHard18.com
http://www.fuckedhard18.com - girls as cute as softcore solo site models and they fuck and suck their hearts out.
the quality of models and paysites has never been better - go back 10 years and see the shit that was available, there were a handful of quality paysites back then, now there are a ton of them covering god knows how many niches and micro-niches.
sales aren't down because the quality of model and content. some of the highest quality paysites and i won't mention them by name are seeing some of the worst sales drops.
the models being over exposed - that is an issue, and there isn't really a solution to that. some sites try to recruit their own models and they do get some but finding enough to update a site once a week - impossible. never seen a paysite that could exist on its own models without having to go the adult talent agency route. um..... well..... Abby Winters does it but look at the girls he shoots, talk about some ugly girls but he has a huge following of men who love the reality of his models and content. And Playboy does it but that's Playboy - there's only one Playboy. Not like there are girls in Nebraska dreaming of being a Twistys or FTVGirls model, as nice as those sites are.