I think it would be nice to put a rover on Iapetus, for several reasons.
1) It may be an artificial satellite.
2) Many of it craters are hexagonal.
3) Its gravity is 1/44th that of earth, so in theory the rover maybe be retrievable and sent to another moon, or back to earth.
This mission would be big $$$$
http://www.soulsofdistortion.nl/Iapetus.html
Incredible details of this ‘exotic’ moon were revealed by the Cassini spacecraft on New Year’s Eve, 2004. The fly-by’s closest approach was within 40,000 miles. Iapetus ‘does not seem to be a perfectly round moon.’ Iapetus is visibly ‘squashed’ by at least 5%. Richard Hoagland stated that Saturn’s bizarre satellite should be round. The smaller ice worlds of Mimas, Enceladus and Dione are perfect spheres. Why not Iapetus?
Thank you, Richard Hoagland for these NASA (Cassini photos) and your ‘artificial moon’ theory on your web site. Examine the mile-high tower on Iapetus. There are numerous hexagonal craters on Saturn’s moon, including one very large one as you can see in the next photos. Was Iapetus an ancient DEATHSTAR that was once operational…but, now, must orbit in silence and decay?