At first we had style vs. style with mostly one-dimensional fighters. Then we had the top guys in each division be well-rounded, with the bottom guys still one-dimensional and relying on power, chin, or athleticism (HW is still like this IMO). Now most divisions are well-rounded, but the vast majority of fighters aren't a GSP, TJ, MM, or Jones who are experts at everything. Will there come a day where most fighters are experts at striking, wrestling, BJJ and have amazing power, cardio, and chin? If so, then how good will the cream of the crop of that generation be? Basically, how good can fighters ever hope to get?