if you are using a wireless controller it may be a good idea to have rechargeable batteries.

never buy used games from walmart

hypothetically you can do a lot to it like watercool components and whatnot but what is the cost of enhancimg a 10 year old device.

also the gpu would perform poorly outside of the xbox 360 confige due to the lack of drivers

I still have an original Xbox which I modded to add a 320gig IDE hard drive and modchip of course. I can't find any of the old games I had but fortunately I had copied all of them to that hard drive. There is no online service for it to connect to but its still a solid XBMC client for any files DVD quality or lower and i can play stuff like Jade Empire, Evil Dead Regeneration, Marvel vs Capcom, etc. whenever I want..

I have a BUNCH of original Xbox games, it was a pretty good system and had decent games.