Ah, i'm not a big Gau fan myself either. I knew there was one I was forgetting. I didn't care for his fighting style all that much, I prefer to be in control of my characters.
Same here. And although Mog has a Dance ability which once activated causes you to lose control, but at least each dance has lots of different effects so it leaves you curious as to what's he going to cast next. And also correct me if I am wrong, but I think Gau could only do Rage, whilst with Mog you could attack normally too, without having to do Dance. Umaro is another character which you can't control, and he is not my ideal choice in a party, but at least he didn't annoy me. If I had to choose between him and Gau, I'd choose him.