
It could be a impromptu suvey of sorts, maybe to check what kinds of xboxes are using live ie, if they have the drives found in 1.0, 1.1, and maybe using that information to see what group of xbox owners are using live the most. Im not sure why they would implement the check for this reason, but its a possibility nonetheless.
C) Maybe an additional means to make sure that the Xbox is in fact and Xbox console and not an emulator ran on the PC. Now I know none of the emulators out right now are anywhere close to Live connectivity nor would there ever be any reason for them to support it, but it would be a safeguard against any future Xbox emus that try to aim for Live compatibility.
On a personal note, I got SB: LoC about a week and a half ago and have played it on average 3 hours every day since. I have had no problems accessing Live (Past a DNS server problem a few days back), so I know im not banned as of the time of this message. Of course, as previously suggested MS could just be gathering the information before they start banning users, but the main counterpoint to this is like I said in (A), such a move would only hurt them as they already have a bulletproof defense against modchippers going onto Live.
Basically, take a breath people. With the amount of info given, the way it was given, and only from one source, this info has about as much weight as the hundreds of other rumors that have turned out to be false. If you want to stay off of Live to err on the side of safety thats up to you, but if youve already been on Live like myself at least wait until more concrete evidence on this issue comes to light before you start ripping out harddrives and swapping eeproms.