The grandparents do not even have an internet connection nor a computer like many others on this planet.I assume most of the world population has no access to this thread or any other website.
I know my options pretty well - and still what I would like to see from Apple is a Mac that can play and burn BD disc rogether with a authoring app iDVD or DVD Studio Pro wether you like it or not. End of story.
Wait a second, what has the does the fact that most of the world population don't have access to the web have to do with your wanting apple to have blu ray in their computers? I where did I say that your grandparents (which I didn't bring up in the first place) must have a computer? Get them a br player then like I said and easily transfer any files you want from your mac to its hard drive so they can browse whatever home videos or films you 'd like to show them.
As much you want your mac to play and burn br, I am of the opinion, and by all accounts apple is too, that it's not very important to most people for all the reasons I 've said so far. So it's not happening anytime soon unfortunately.