I'll tell you what's wrong:
PC games generally have bugs come up. Someitmes to fix bugs you need to reinstall games. Many times I like to reinstall games or bring a game to another friend's house.
But 8 cds??
That's like 45 min installation (Enter the Matrix - 4GB game)
So this game (if 8cds) will be
8*700 = 5 and a half GIGS??!!
What if I lose a cd! Or scratch one by accident! So many so easy to lose.
I'd agree with DVD if it would be compatible for everyone.
I hope DVR will come into play.