All three of the current consoles are capable of using a HDD. So far, only one of the three ports on the bottom of the Gamecube is being used and that is the modem. And as I understand it, Nintendo isn't going to fully launch their online stuff until next year...the only reason its kicking off this year with PSO is because Sega pushed them to. Although its speculation, but I wouldn't doubt that Nintendo will release a HDD for the GC next year.
Besides, I think Nintendo might have a fit if Stefan tries to put Graal on a rival system
