Fellow brick-heads and Risk enthusiasts unite!
...Okay, so maybe this is a little unrealistic, due to its massive scale/brick & minifig requirements, but, aside from likely costing $200+ for the board alone, and I think this would be an incredible addition to the Lego Games line, or even the UCS. Imagine 300 minifigs in one set? :) ...that would probably ramp the price up to $600+, though, bringing it into the realm of the most expensive set ever distributed by Lego: the UCS Millenium Falcon.
Anyway, just throwing this out there, as CUUSOO is a place for sharing ideas with fellow Lego lovers!