Seasons. Like poe/d3 etc. Have it split into current and then new seasons. Have to figure out how to incorporate rewards into it that would presumably go to the main "save", but i'm sure yall can come up with something.
It'll shake up the leaderboards etc, since as it stands, Neon will be #1 until he quits the game. While i'm sure there's skill involved, can't outskill the time diff in a game like this, and seasons would shake that up.
Could add gimmicks to each season, like double combat drops, etc etc so it shakes up the strats for how to level etc. Would probably have to disable player shops and only allow clan vault?
Would take a long while to make this, but it's an idea to give the game new life over the years etc.