IMO, After you're 3rd character, Korthos can start to get annoying... especially with the amount of Sahuagin.
In my opinion, it should be spiced up, with some Malenti in the quests. If you're unaware, Malenti are mutant Sahuagin who look just like Aquatic Elves. There are so many plot based things that can be done... And it's fun to fight more than about 4 different kinds of monsters for a huge quest chain.