I think there will be better fighter 5-10 years down the road. MMA is a young sport. The talent pool is growing, more and more young kids are joining MMA gyms rather then traditional boxing Gyms or Karate dojos. As any sport grows, more people get involved. It's a sheer numbers game.
Fighters like Chuck, Fedor, Wandy, Hughes and the Nogs will be remembered in the same way Royce, Ken, Sakuraba and Severn are today.
In UFC 1,2,3 did u think anybody on this planet could beat Royce Gracie in a fight? not me. But plenty of guys learned how to exploit his weakness and nuetralize his strenghts. Nowadays Royce could'nt hang with elite fighters.
This Sport is just getting started. It's gonna be fun.