Funny, the way I see it, anything less that a fully supported attack group should not be able to contend with a planets defences, I'd also like to see that same situation outside of major pirate bases.
EDIT @ Orin: This would keep players away from hostile planets, but the Battleships only cover planets, players would still need to deal with tradelanes, stations and large attack groups.
Besides, show me one player faction that is on duty 24/7.