You obiously have no idea how fridges work. They draw heat from a closed area and output it into the outer area. Leaving the door open renders the fridge useless.
There will definitely be an sdk for the pc. Microsft isn't publishing anymore, and bungie owns the IP. Bungie supports custom content, and if they could have made an sdk for the pc they would have. But the pc ports were not made by them so they couldn't. The engine Bethesda uses gets worse every release, it sorely needs a rewrite.
Its not that good. The blam! engine is amazing, if it wasnt limited to the xbox 360( which since bungie is multi platform, it no longer is) it would kick such ass.
Are you an idiot? Mouse and keyboard are the cheapest things ever. You could have only 1 mouse and keyboard and 20 computers. Infact, thats how most servers are setup. Also, you do not know crap about liquid cooling, quinn knows worlds more about computers then you do.