I think a very useful feature would be to be able to force the duplex settings on the XBOX's NIC.
A lot of people, including myself can't get the xbox to auto neg at 100/full. If there were an option to force these settings in the network config file it would certainly make transferring large amounts of large files over to the xbox less painful.
Other than that, i'm already extremely pleased with all your hardwork and tireless efforts!
Excellent UnRiveled Work!