It's my understanding that a Lunar sample return mission is being planned for returning material from the south pole of the Moon. I believe this funding comes from the "New Frontiers" program. Unfortunately, there is a Venus lander mission competing for the same pot of money. The Venus landers (two landers transported on one bus) would do in-situ surface chemistry analysis, surface photography, and atmospheric science. The science return from this Venus mission would IMHO be significantly greater than a Lunar south pole sample return. The business about ice at the lunar poles is probably sales hype (like bugs on Mars). The hydrogen detected by Clementine and Lunar Prospector was probably Solar proton or hydrated rock (concrete is a hydrated rock). Ordinary ice would eventually sublimate due to the Moon's libration allowing the south poles to receive some illumination from the Sun. The United States has landed only one spacecraft on the surface of Venus that returned data. That was one of the Pioneer Venus small probes that was actually an atmospheric probe and not intended to survive surface impact. Through pure accident, it survived impact and continue to function for almost an hour.

Gary