Not the idea that one build fits all, but the notion that each weight division has a perfect build to dominate?
HW.... Fedor dominates. Brock comes in on a tonne of hype and smashes up UFC. Fedor starts to slip and Brock is now thought of as that guy in a new breed fap fest. Then Cain turns up and smashes Brock, loses to JDS and then smashes JDS,...on the feet!
Fedor, Cain and Cormier look like the best guys over the long haul.
LHW and MW ... guys with power and reach, and the weight cutting ability to limbo under the bar own these divisions,
WW...GSP doesnt have the best reach, and the division doesnt have a lot of rangey lanky guys. Perhaps its the power translation, but WW is full of wrestlers and before GSP, it was hughes and penn dominating.
LW... Similar to WW, but essentially a border between WW and the lighter weights. Some guys who are wrestle heavy and some strikers. All must be fast, mobile, and have good takedown defense. Power is a bonus, but not a must.
Lighter weights... see above, only more so.
The main thing here is the power equation. At HW guys can be built up, built out or built all over. They need speed, power and a good chin.
As we go down we have two divisions that are like ultimate weight cutters.
Then we have a division that is dominated by guys the look like a more built version of the man on the street.
And then with the lighter weights we have human dynamos.
Is this the natural evolution of humans to fit weight classes rather than an evolution of the sport of fighting itself.