This thread is an echo chamber really, and I can only contribute to said echoes! most people here will have played for so many years because participating in content wasn’t hidden behind this sort of progression.
Apologies if this just a repeat of the above…
The only other MMO I have played is gw2. Things started to go wrong there when I had to grind for hours just to get the stat set I wanted for a build, doing really banal collection of resources, just to play. In contrast it’s easy to get a new char to max level, with max gear in gw1. Then the only progression requirement is to get to the outpost where your chosen content takes place - you can either get a run, or you can play the game through. Like do fighting and quests and stuff, play the story. Maybe get a nice drop along the way. But then you have experienced how to play the profession, levelled up and geared your heroes, and unlocked the map - pretty serious improvements for a character. Comparing my main’s heroes during my first vanquish compared to my last on the way to legendary vq, a huge amount of progression and power increase too place through hero composition changes, build editing, and learning new tactics happened along the way without ever having to increase my armor or weapon values. In this regard making a new character and progressing them is a subtly much more serious endeavour that just levelling to 20. Of course progression like this will trail off after 7k hours, but I reckon a good few hundred can be taken over this process playing in an average way.
Other progression is optional and largely cosmetic, but it’s something you can tackle organically over time without the fear of obsolescence.
I have 4.5k hours in this game, and remarkably few of them have been doing repetitive nonsense just so I can experiment with a new build.
I also kind of like the fact I can still get my ass handed to me on my main by 4-man area VQs or 6-man missions periodically if my build/team selection isn’t great, or I make a bad pull or don’t know the area patrols too well, in the knowledge I can swap things around without having to grind out a new set of gear to make me ‘more powerful’.