Another easy quick wins way is to continually review and update some or all mechanics rewards every season. E.g., add new experimental affixes, add new primordial uniques, add new woven affixes, add new reward vectors (e.g., could there be a new egg type that accepts exalted or corrupted items and does something with it?), add new enemy types (e.g., there isn’t a “necrotic” nemesis currently; add new types of beasts to hunt?) and encounter formats / woven echoes.