Currently you have 320 slot avail on public.
I suggest this format:
PVE Out Lands = 100 Slots
PVP Colorado = 100 Slots
PVP Zone Wars = 30 Slots
PVE Sanctuary = 30 Slots
FFA With Sniper = 30 Slots
FFA No Sniper = 30 Slots
Total Slots: 320 same as currently avail...