The thing that bothers me about this X360 BC "issue" (i use that term loosely),
is that Peter Moore said that they would continue emulating games on a game to game basis until they have one emulation engine that emulates every game.
So knowing that, "what's the hold up?" is the question that comes to my mind....
You figured if these cats can come up with specific game emulators, then they have the know-how needed to develope one Xbox emulator for most of their games. They've had more than enough time to do it....
The Xbox is still bringing in profit on the software end. And contrary to popular belief, M$ came out earlier this week and said that they have no plans of discontinuing Xbox production.
All this leads me to believe that M$ is afraid of releasing one common emulator.
Perhaps they fear that someone will pull that emulator and code it for use on PC's.
Such act would kill most of M$'s software sales and it would probably anger their 3rd party associates who still count on the regular Xbox for most of their revenue.
So game specific emulators makes perfect sense to M$ right now.
Maybe in a year or two, M$ will finally give us the ultimate Xbox emulator download.
I predict this will happen as early as the PS3 launch, or no later than next year.
Why this time frame? The release of both Sony's and Nintendo's next gen consoles will be the official end of the current console generation. Both consumers and software developers/publishers will focus on the next generation.
My 2 cents

...Except for the fact that they do have 1 common emulator and those things that you're downloading are nothing more then "profiles" that is to say it just a file with a bunch of settings in it that tell the ONE emulator how to set itself up for a particular game.
wow...almost 4 months in the making and they pull off 3 games.....how lame can you go.....great job m$

For my money the 13 games that were on the list before and are now being emulated near flawlessly as opposed to barely playable is worth a whole lot more then 3 new games... IMO that means they added closer to 16.