I do actually have some problems with the concept. The JSA shouldn't have a 'see a guy and hit him' team. That's the JLA or better yet, the Outsiders. The JSA fulfils the unique role of being a real mentor team in the DCU, with a great focus on the idea of legacy heroes. The JSA isn't about rough 'em tough 'em squads.
I have no trouble with a second JSA book, although I'd prefer it in the JSA vs Kobra format. That mini is spectacular, IMO.