Earlier quoted context omitted.
> I feel like, particularly with the new Diablo 4 they could make the leveling curve on the base game last MUCH, MUCH longer and it would actually be far more enjoyable for far more people. It would piss off the endgame crowd though, because all they want to do is get to max level as fast as possible so they can start farming. They just did this, and made the game much more of a slow grind. Diablo 4's greatest flaw,…
After ~25 years of playing this sort of game, I am increasingly sympathetic to the idea that exponential-power leveling is just a busted mechanic. There's a variety of good ways to use it, but there isn't a great way. You can lean into it, like Disgaea, which just embraces the brokenness and writes them into its mechanics. You can just sort of write a standard game, but then, in the end, the solution to all problems…
Hero stories need to have a satisfying end, and I don't think many ARPGs acknowledge that this is even possible or design to allow it to coincide with the end of the story.
I imagine an ARPG designed to _end_ characters would level-gate content in such a way that unlocking, and defeating, the final content would be a satisfying end to the character. You would certainly be encouraged to start afresh, NewGame+ style, with a new character but it would be made clear that the character at the _end_ is also _finished_. Completed. Over. Done. The hero has finished their journey.
Ie, lock the character and have them just lounging around in a hub/town for your new characters to see.