Realizing it's not likely anyone of enough importance in Microsoft's team will read this, I also understand I have a better chance of THAT happening than getting a feature request to anyone via 1-800 support lines, or even email/forum-mail at xbox.com. That said, here goes:
I've mentioned it twice on the forums here, and I'll say it again. When MS released the hd-dvd they did so stating directly that one of the reasons the hd-dvd was NOT internally mounted was because of the uncertainty of the format war. They wanted to be able to support/put out whatever 'won'.
Reference my orig. post:
Here (which also has the orig. x-s news article link on it).
Funny thing is, awhile after posting this I ended up buying a PS3 basically just for the blu-ray playing ability. I have rented one game for it, and bought one. It has seen less than 100 hours of "game" play. (plenty of movie play though). Why is this funny? Because 1, it could have been $100-300 bucks in MS's bank had they a blu-ray player accessory, second, if the other current news article is right, and Xbox Live gets a price increase, I'll be using my 360 for a media center (which I do now as well), and the PS3 will become the new flagship console in my house.
So if you're reading this, MS employee, manager, team leader.. Get off your haunches and get the word through your dept. Your company is losing money in a big way, face it - the R&D is pretty much done, edit some code switch the hd-dvd drive out of the case and pop in a blu-ray, release your updated code and start selling blu-ray today. Don't use it as a gimmick on the next-gen console, cuz newsflash - If it wasn't worthy of an accessory today, it's not gonna be wanted on the next-gen. You can't go claiming "features blu-ray technology" after just saying "sorry, we don't feel there's a demand for blu-ray on our console system"..