This would never happen because of what they've said..this system simply could not sell without an HD. 80 GB isn't enough to me, but you still can't do it.
I have a 60 GB, with about 14 gigs of space left on it. The reason I have 14 gigs of space left on it is because I didn't want to put videos or music on it to save for taking up the space I use with how many games I download and mandatory installs I have to deal with. Ideally, I think 160GB would be perfect, but up from that isn't bad. If I had 160 GB, I'd have tons of shit on it..I'm just waiting til I can afford a bigger one, or christmas. Probably the latter.
I also understand that I play more games than the average gamer, and I probably buy more online content than the average gamer as well. 80 would suit some perfectly, just not me.