I was a big "Taxi" at the time that ST3 came out. And I thought Loyd was perfect as Kruge. I love the scene on the planet after the Enterprise blows up and Kruge is screaming at Kirk through the communicator; furious about Kirk killing most of Kruge's crew. And Kirk's response is basically "Oops. Tough break for you."
And I almost forgot. The scene when Kruge leaves the bridge of his ship. Looks at his targ and then at Maltz. And says "Feed him."