Sephsekla mentioned on Discord that he also likes Sareth's idea, and also proposed a short puzzle campaign, like a murder-mystery he recently played elsewhere. I don't have anything like that formulated, but Mav just might! And if it's as fun as the haunted mansion mystery from Errant's veeerrry early days, then you just know it'll be one to remember.
A puzzle campaign? Well, I suppose that could potentially be interesting. But what I was thinking of was more the Wulfgard equivalent of a war movie (Saving Squire Reggie? ).