I agree with the roper/wxw, intermediate/elite, in fact the only one I don't agree with is t17/shopper. That doesn't mesh so well for me. I see where the premise is in theory, but they don't really coincide in my opinion.
As far as HHC/ropa dialogue, Mablak and Random do seem to be a cut above, you don't see new people challenge them or get to their level because their skill has been attained over many years. The good 'early' players that kicked ass in league early on, MPH, Volcom, Bizerker, Wario, ect. had only been playing a few years. Now this learning curve from bottom to the top of the standings is years and years. I can't imagine how long it would take me to get anywhere near the level of expertise in the game of worms that Mablak has. So in that aspect, TUS certainly has 'inherited' the dominant players, but not because TUS is lame, but the rules of the game have changed.
The community is pretty linear these days. In the early days of worms armageddon, aliasing was rampant, and you never knew who was an alias and who wasn't, because people could get very good very fast in comparison with their peers. Nowadays, you can spot an alias right away, and everyone knows who the best players of the community are. I don't think that people are any less competitive.