The reason I didn't get started the day I thought of it was that I felt it should be written by an Apple "insider" -- an Apple employee, or at least a long-time tech pundit or Mac user who could fill it with all the little references to Apple personalities, internal politics and company lore that such a project is just begging for.
That said, maybe this thoughtstream can attract some quality suggestions, or grow into some collaboration with such a worthy person. I wouldn't even mind handing it off completely to the right person.
If you want to participate, the ideal way would be for you to form a Thoughtstream of your own with the same name. You could then add your thoughts to the combined Apple Foundation stream, and/or repost specific cards to your stream and add comment. (The combined stream also has an RSS feed to which I am subscribed.)