I dislike his lack of chains, at least chains I've learned to use. I'd have to say Jecht and Seph are the best characters in Dissidia when used properly. Cecil's definitely in an upper tier, but Jecht, Seph, maybe Gabranth, I'd call God Tier. I also haven't given a whole Hell of a lot of time to learning Cecil, outside of the time I spent getting level 100 with him, but what I've played, I don't like all that much. And yeah Atma, I've been practicing with Jecht, since he seems relatively unchanged, and among my best characters anyways.