Does your mod include Bacco, Wilbur and the other heroes that come through events?
Oh, I see. I filtered the quest/event heroes based on whether they had the <Allegiance> tag. Almost all quest/event heroes are missing this tag, but Bacco has it. But he doesn't have any chance to spawn as an NPC (new champion), so I'll put him in.
The CoreRandomEvents shows that Wilbur is a renamed Janusk, and the other CoreRandomEvent hero, Sir Kodrin, is a renamed Champion_Kiergann. The hero these two heroes are based on can also appear as NPCs. I have only been giving the ability to not divide experience based on whether a champion only appears from a Quest or Event, excepting Ascian because she starts very powerful, and Quest Pack Alexandros as it might provide content that is reserved for the Quest Pack owners.
I'll have to see whether I can edit random events from the mods folder to see whether edit the CoreRandomEvents to either disable the events and provide replacements (and new Champions outright) OR change the reward, from the mods folder.