Eureka might change something about endgame character progression. Will hear details on that soon.

Part of me wonders if a gear treadmill is outdated design, but it's definitely still very effective in getting people to do content.

Somebody suggested a junction system, attuning to The Twelve or something like that to unlock powers and character customisation and give an ongoing use for exp after hitting max character level. Well, exp grinds have a problem of being botted by cheaters, but it gets you thinking outside of the equipment upgrades model.