In Thinking about this I would like to make a suggestion.
Change the Favor of the Quests on Korthos (both the Village and the Island) to a new faction we will call Korthos rather than there existing wide spread factions they have now.
Set a new Faction reward for reaching 60 Favor of a +1 Flaming weapon of your choice. This would be a nice gift from the denizens of Korthos for solving their issues.
Quests Max Favor
The Collobrator 6
The Cannith Crystal 6
The Storehouse’s Secret 6
Heyton’s Rest 6
Stopping the Sahuagin 9
Sacrifices 9
Redemption 9
Misery’s Peak 9
Necromancer’s Doom 6
Total 66