I loved the art also. This is one of a few comics that I am trying for the first 6 or so issues to see if I am interested. I never judge by the first issue though, so I am kinda undecided. Magog would definitely not be one of the first characters that I would want to see get there own comic spinning out of JSA. But we'll see where Mr. Giffen takes it.
I say NAY for now. IMO, I think they are just trying to make him a warmed over DC version of Wolverine. I'll have to see how his character fleshes out.