Yes, I'm really looking forward to playing SOF2. And this little quote is giving me some high hopes for JKII...
Team Arena, id Software's add-on for Quake III Arena, included a new terrain system that allowed for enormous outdoor environments, but rather than make use of this technology, Raven has implemented ROAM, a terrain system that it says will allow for even larger environments, which completely dwarf the already lengthy ones used in the first game.
If they implement the ROAM tech in JKII, they may match or even surpass JK's level sizes yet. I'm keeping my fingers crossed.