It does! The game was - is incredible successful. I'm sure there's a shit ton of awards its going to win (provided games actually won actual awards) when its all said and done, including most successful MMO by a non-U.S. company in history. That comment was more in regards to the fact that its -still- the only one, 13 years later, with anything close to that gear system, and the game itself is about to go into a comfortable retirement around the end of this year.
Why do you think that is? Why do you think that, in a world where if you ain't stealin' ideas and mechanics from your rivals and forebearers, you ain't tryin'... why do you think that no one has stolen that? Hell, its no secret that XI is a Japanese-masked EQ/Ultima mash-up, and we know that WoW took from plenty of games and that most games today take from WoW, so why is no one taking XI's system and trying to build something around it? Cyncism aside, its either about the money (the risk involved of doing something that ain't cookie-cutter, despite having a step-by-step guide on how to do it ala. XI) or about the design (someone working on the game thinks that there's something about the system that they don't want to go with).
The more you think about it, the more of a surprise it is that so many companies try to redesign the wheel when it comes to interacting with the world this and retelling a familiar story that... but no one touches the horizontal system that XI basically founded. Hell, XI itself started to cross over into WoW territory by adopting ilvls.
Make your own conclusions about it, but ultimately I feel that its simply too complicated of a system to invest massive resources into trying to craft a balanced progression of content while trying to balance an extremely wide amount of skills and stats. When you can +100 to vit with vit meaning a number of things and +100 to defense with defense values meaning a number of things and +10% to damage reduction with all three having different mitigation weights and amounts and +enhancing of job skills that may provide bonuses to all of the above... and that's just defense... I dunno. I could see that taking awhile. Maybe no one's willing to take that risk, even though they take stupid risks all the time (like pushing games out way before they're ready to launch and bombing horribly in the process).
Does that mean I don't want to see the return of actual ability-enhancing stats? Fuck no, I love having +15% extra multi-shot damage in Diablo 3 - stacking that shit up to the point where I'm literally quadrupling the damage of a single move through +% affixes - and would love to have +11% extra health gained when using Inner Beast, or +1-2 seconds on the Hallowed Ground duration, but it also means exactly what I said earlier: that I think its too complicated a system to balance in progression-based games for any company that isn't made of billions to actually invest the R&D time and money to perfect within their MMORPG. I think that's why we haven't seen it yet.
I think the closest thing we'd get to it would be some WoW/Diablo MMO hybrid from Blizzard, since they already have a semi-wide system in D3 that enhances not only raw stats but class abilities.
Shit, we could sit here all day and dream up badass affixes for a wide gear system... but good luck implementing that with any sort of fairness. The closest thing I could think of would be some Korean Grinder RNG system where you can spend a currency to randomly "roll" affixes on your gear, but then we're talking diminishing returns and the cornering of markets for those resources and a whole lot of other problems.