The hands had the column for the axle filled in with either support or WST material and I ended up "drilling" them out using the sharpened end of a straight paper clip. it was terrifying. I then cut pieces of paper clip to length and used as axles for the finger joints.
It worked, but I can't expect anybody that goes for this kit to do the same so I'm going to have to work out another solution. I might try a half ball/recess friction connection but I worry that it will keep popping out.
Other than that, this is working exactly how I wanted
For those interested so far:
Kreon upgrade kit by wulongti on Shapeways
Joints are articulated enough for a 3 point landing (the Ironman pose)
Standard Lego parts can fit the pegs for added customization
The pegs all have a 3mm port along with the hands to accommodate the Kreon weapons/Kibble parts as well as the Cyberverse Weapons.
The bottoms of the feet/forearms have female lego ports
Parts easily removed and added to other toys