When did I insinuate gear is my only motivation? I enjoy the content. That being said, I like a challenge, and won't run the same handful of faceroll dungeons I barely even need to turn off cleric stance for. No matter how well designed they may or may be, that inevitably gets boring. Once I have what I want from them, I'll likely have ran both 10-20 times and that's more than enough. At least for a while. I'll go back at some point, maybe. On the other hand, I love running Savage multiple times because it simply demands more. No matter what ilvl I am, I need to know my job and how to perform it well.
Not at all. I run on alt jobs for fun. By that point, I'll have cleared multiple times and simply feel like playing something else. The first several months is when I don't know the fight and have to manage with sub-optimal gear while competing with other players if I so choose. You can't replicate that experience when the odd numbered patch comes along and everyone picks up 270 gear. My first clear this tier was after 50+ hours of progression with a trash 255 weapon and only some 270 gear. The parse was ugly, we were all tired and frustrated but the nerd scream after made it all worthwhile. I wouldn't have that four months later when I can run Dun Scaith and Zurvan and be nearly full 270 before even reaching A12S. Afterwards, it's all about fun or maximizing my numbers.
Could they loosen the restrictions? Maybe. But the faster we optimize, the less likely people stay. Plenty of raiders unsub not long after the odd number patch drops because they've managed to gear up the jobs they care about. If they could do it week one, well, they'd unsub that much faster.
The fatigue system actively prevents me from playing. I literally cannot progress further no matter what I do whereas I can go into A12S with ilvl 250 crafted gear and still attempt it. I'll likely wipe multiple times, but at least I can to try. You're acting as though jobs are wholly unplayable if you aren't bis. Like I just said above, I cleared Savage with Sophia's weapon. You don't need the best gear just to clear content. If you want to rotate jobs, find a static whose members feel the same.
It isn't to say I like the weekly limitations. I just am not bothered by them one way or another, and can appreciate why they're in place.