My problem with Koth is that, unlike every character in all of the other Star Wars properties, he doesn't have the good sense to openly obey the Sith Lord.
He openly defies me and I can't force choke him or kill him. It'd be one thing if he was subverisely sneaky. He is not. He is protected by plot armor and he knows it and acts on it. That's how it feels like he's written.
I do not tolerate insubordination, but I'm being forced to. The heart of the problem is bad, terrible writing, but Koth is the face of that bad, terrible writing.