Stipulations include performing the science mission and releasing the data. While there the cool factor would be orders of magnitude greater, there are also con

Stipulations include performing the science mission and releasing the data. While there the cool factor would be orders of magnitude greater, there are also considerable commitments and risk involved. So the question is: what other benefits would be involved? I'm sure there would be many, particularly if you could prove that you could launch and operate such missions, but I doubt that having a museum piece would be one of them. (And you would only have that museum piece if there is a twin that remains on Earth, which seems to be common for NASA missions.)