Are you forgetting Ginobili will be coming back in Dec? There's no way to divvy up playing time for such a crowded backcourt. Scoring is definitelly a necessity, but that's why the signed Mason. If the Spurs can't get enough scoring from TP, Hill, Mason and Finley, then they're screwed anyway.
I wouldn't have an issue if JV was traded, but don't expect it. If you believe that he will, you're grossly underestimating Pop. It is an interesting dilemma. Pop wants and needs scoring, but he's -bent on keeping JV on the roster.