Also another Test bowler means we are forced to play with 5 specialist bowlers. Yes Copeland and O'Keefe can bat. But if you look at Tasmania they have similar standard batsmen in Butterworth and Gulbis at 8 - 10. They can do this as they haven't stacked their squad with bowlers. But they still have enough bowling options to win matches.
The NSW sides that have won previous comps, have been the sides with better batting line ups. We always have bowlers coming through the ranks. The other thing those side had was he best non Internationals as well.
Nathan Lyon played 5 games last season. What is benefit if each game he plays you are forced to bat one short, in a batting line that is already weak.