I believe that it is quite simple! take two of the tubes that are in the Tetrix kit, and then use the mounts to attach them to any piece of metal that has holes already in it. I will try to explain it in picture form...
Take two of these:
http://shop.pitsco.com/ImagePopup.as...g=9196&p op=1
And attach them to these:
http://shop.pitsco.com/ImagePopup.as...g=9199&p op=1
And then mount them to any two side-by-side holes on this:
http://shop.pitsco.com/ImagePopup.as...g=9195&p op=1
The above component will be attached in a vertical postion on the minibot, and then all your robot needs to have is a simple pair of vertical pins that will slide into the tubes. (of course they have to be on some type of deployment device)
I personally think that this would be a great idea, and fairly easy for any robot to incorporate. This will help everyone to be able to share their minibot with their alliance partners. It is also easy to standardize because everyone should have the parts needed to make this if they came in their kits.