Given the nostalgia factor, I think GI JOE RAH could be far more marketable than some want to give it credit for. Yes, this is a niche hobby, but He-Man, Transformers, Macross, several lines from the 80s have made a come back.
At some level, it comes down to collectors who are in their prime earning years, even in a craptastic economy, who remember certain themes and lines and shows from their childhood.
GI Joe RAH, the way most of us knew it, will not be salient in the same way 30 years from now. The death of vintage GI Joe is a classic example. People who collected that stuff as kids are dying off or moving into a fixed income situation.
SST is already going against "classic" formats for these figures. Duke doesn't look like Duke from his 80s filecard and that's fine, so if that's going to be true, will genuine crossover appeal hurt anyone all that much?