Okey, lets speculate about what Shar said (I love speculating about games and series

)
"The Last Laugh" is a possible title for something I am tinkering on, but I won't tell who it is about yet (name may also change).
That could be a short story about Krom (if the name remains) but also about Lady Meya, as we know she is the leader of the necromancer cults, but one day she wake up and Krom and her followers were besides her. She was killed by krom and reanimated so the "Last Laugh" was either Krom while killing her, or Meya because she got what she want to, infinite beauty.
Funny that you mention him.
That's all I will say for now.
Of course i have to guess what our best demi-hero will do on SHB. My guess:
We posses Him:
Sir Ross was a member of the imperial army, after his defeat on the tunnels and just his army remains he had to join either the Royal army or the Golden Guard. Why? Because he was accompanied by Ironfist, Karskin and Dwarves and none of them survived.
So Gardon would let his detachment join him, neither the remains of the karskin, and probably not Royal army because Dorten despise the Imperials, the only place he got was the Golden Guard as Van Durce was recruiting soldiers on this continent.
Both him and his soldiers joined Van Durce and were assigned as soldiers on the Elven Forest (or other places, not sure about that). In the moment the undead start fighting a army with Krom as leader, they´ll turn to our side, like Lera did in the Elven clash if we had Salana, becoming a traitor and therefore cant infiltrate any more armies, but having a new allie on that mission.
We destroy him: Either another faction is in his place or none, having 1 less enemy or a enemy we cant turn our allie.