The problem with Radovid was a problem that's a common theme throughout this game. All too many times the writers failed to adequately explain why things were as they were. I could accept his descent in to madness if they'd provided a context for it, explained why it was. Was he inbred, had he suffered psychological trauma? Instead the game just said "Right, here you are, mad man. Now go kill him". It was all too black and white which many key areas of the game are in a series (and IP) that is fundamentally grey in nature. So yes, an EE could fix that simply by expanding upon his back story and exploring his psyche a little more.