It was quite a few years ago that I first heard Joe Rogan lament the large ranges between the upper weight classes. I didn't agree. I'd like to see the UFC with a relatively small roster, a limited number of weight classes, and only the best of the best.
But the UFC has other plans. They're pushing into more markets, brining in new local talent, expanding their roster, and adding more events. I won't detail the exact weight limits or speculate about regulatory issues, but I'd like to revisit the general idea: As a fan, would I like to see the UFC add more weight classes?
In the earlier days I was worried that you'd have a bunch of champions, each king of their own little, insignificant hill. I thought it would devalue being a champion. I also worried (and still do) that some fighters would wander back and forth, blurring the divisions.
If the sport continues to grow internationally, those hills will pile up with more and better competition. In this new environment I think adding weight classes could work if it's done well. More events would have title fights and title-picture-relevant fights. If the champions span more nationalities that could also add new dynamics and rivalries.
The part I like most is more potential "superfights". I liked hearing the speculation and opinions about what would happen if GSP fought Anderson Silva. I want to see Jones vs. Velasques and Aldo vs. Pettis. I'm glad we got to see Penn vs. St. Pierre (even though it wasn't as competitive as I'd hoped). With more champions we'd get more talk, and being closer in weight I think superfights would happen more often and be more competitive.