I dunno. I think the fact that he has a big red cape, ornate bio mask and lots of quills on his head sets him apart from the other Predaors pretty well. As for making him more collectible, I'm not sure I understand what you mean. Are you talking about including something with him that might persuade collectors to purchase him who would otherwise pass on the figure? If so they could sell him in a 2-pack with a Wolf 2.0 figure. They could make it so the 2 pack was the only way to get Wolf 2.0 like the upcoming Batman Returns Batman / Bruce Wayne set and the recent BD RoboCop / Alex Murphy set. Pretty sure that would move some units.
Joking aside, I don't think this figure is going to be all that popular. Sure some will buy it (like me), but if Elder 2.0 from P2 is still readily available at really low prices this long after release, what chance does this guy have?