MS's next XBOX already looks to have several disadvantages in terms of cost

[FreeTalkLive]

I have no clue why the next Xbox needs to have Blu-ray. It could be DVD, HD DVD, an improved version of DVD, carts, direct download, something else, or it could even have more than 1 format (like all of the consoles currently have).

I didn't really see the meaning in your other reasons.