I say get a different artist on the title for every other arc. Hitch's art seems to have slipped since he drew the JLA last(IMO) so maybe he just needs more time so he can do a better quality job on it. Another option is to just do a complete overhaul of the title with a new creative team and roster for the JLA with Green Arrow, Black Canary, Hawkman, Zatanna, Firestorm, Vixen, Batgirl, and Black Lightning.