re: A learning experience
"But, the interesting thing could be: the ESA ATV, the Kliper could keep it active without NASA's contribution...But wouldn't that be frustrating to see others taking advantage of and using devices and equipment already there and paid by US tax dollars and no american being there?"
Nope. Instead of frustrating, it would be wonderful. It could be frustrating to some pinheads at NASA, but I think for Americans in general they would view it as an accomplishment.