ok guys list of things i need to design/ put in the fort say if there's anything i miss.
Obsidian keep.
Foundry -with lots of safe furnaces, a bank of cobble generators and a set of infinite lava + water pools.
Warehouse - Lots of labelled chests i think this will be in the same building as the foundry and make up the upper floors.
Grain farm (multi level) with easy harvesting/planting in mind, I think this will go opposite the foundry and will be connected by a bridge to the warehouse floor.
Animal farm, i think this will go on top of the grain farm so later i can lay halfstone over the floor of the fort to make it mob proof without light.
Spleef stadium - so we can watch people battle each other / mobs to wile away the nights

,
for this I'm thinking a set of levers to control water /lava to flow onto /under the area depending on the mode.
also if gars is able to (and willing) a set of rooms with individual mobs spawners (again opened by levers/switches)so we can choose the type of mob to be released into the area/under the spleef floor, personally I'd say if we did get spawner's they are solely for battles not farming the rooms won't kill them simply release them into the area.
Pond/lake (Under lit for the prettiness factor

) for fishing/decoration.
Gravel pathways around the grounds. (well lit as they aren't half stone) for that awesome crunchy sound as you walk.
Mine cart rail on the top of the wall, (inner edge) for quick movement around the walls - will probably be very simple no fancy stations etc.
Reinforced and remotely sealable mine cart station linking the fort to garsands new rail network.
Gatehouse; Reinforced, booby trapped and murderhole filled. With double doors to defend against critters sneaking in with players. Including a fail safe switch that will close and lock both doors and flood the space inside with lava and after a suitable delay flood the chamber with water thus filling it with rock and sealing it shut. This switch will only be activated from within the the chamber between the doors, this will kill you and destroy all your items if you press it, it is a last stand device designed to save the fortress in the event of door failure/massive mobs following you.
As this device requires great sacrifice and a huge amount of repair to reset if used correctly and to save The Fortress from a large attack (not of your own deliberate creation) the hero will be dubbed a knight of the fortress and awarded a Diamond helmet and full suit of golden armour along with a protected room and vault in the obsidian keep.
Set it off to grief and I'll burn you at the stake in the arena.
So what's missing from the list?