He had a lot of presence and charisma, that was for certain. But his death, as well done as it was, was a waste of potential. He could've easily became a character like Nero, disowned from his homeland due to losing to you but finding new purpose, or rather, dedicating himself fully to his original purpose but now detached from his loyalty to Garlemald which could've made him into the oddest ally we'd have had yet.
Because you know he'd save your ass from whatever just so he could fight you again, and then go on a ten minutes long tantrum about how you even let that thing touch you because only he's allowed to do that.