NJ5 on 26 June 2008
I don't think Microsoft will ever allow games to require a hard drive, except for some very specific cases like MMOs which require an Internet connection anyway... Other than that, it would amount to telling Arcade owners to fuck off, and I don't think that's something Microsoft wants to be heard saying.
Regarding your other question about moving save files, no idea about that.
My Mario Kart Wii friend code: 2707-1866-0957
