In MMA's short time its had some obvious shifts in style. Early on submissions ruled the day, but as fighters figured out BJJ and the avg MMA fighter simply became a better athelete the guys who were soley sub artists had to broaden the game. Submissions are still a vital part of the game, but its now an addition to your fight game and not the main cog. Then Coleman came along and showed this dominate GNP style. Many fighters like Hughes, Randleman, Kerr and ortiz took it and for a period dominated the sport. Wrestlers bring a great athleticism and work ethic. Once they pick up the sub game and stand up they make great MMA fighters. With the emergence of Mirko/Chuck/Wandy/Franklin etc we are seeing an influx of elite strikers that can keep fights standing. The future of course is people like GSP/Rampage/Shogun/Fedor who are all be it better in one area but capable in all areas. They can finish fights anyway necessary and deal with fighters who are great in all aspects