ToME: the Tales of Maj'Eyal

I'd very much enjoy playing a campaign mode where you complete Age of Ascendancy and then proceed to begin the Embers campaign with the same character or even visa versa, possibly even looping between the two eternally as some sort of Sisyphean nightmare.

Of course this breaks cannon in many delightful ways but paper thing excuses can be provided via the eidolon's shenanigans, temporal anomalies shunting you into alternate timelines, small scale reality warping courtesy of the we-*redacted*

This could possibly include having to select a new race at the end of one campaign as you are either forcibly transformed by the Eidolon for giggles, or wake up in an alternate you's body with timeline slips, with generic points being fully refunded similar to how Rak'shor's cunning works (or even given a second tree gratis, as a victory reward) Perhaps a player selectable option for these choices would be best.

Other options that might be sensible game play wise would be removing the level caps on the second and (if enabled) subsequent campaigns and having the zones automatically scale to player level going forward (Similar to how Starkeep's campaign uncapper functions)

Some additional thoughts, it would probably need some form of workaround to allow all the quests to be repeated and still collect the rewards / advance the plot despite already having certain plot items already as they will not ordinarily drop if you already have them.