The presentation on the Argo Jupiter/Trojan-Saturn-Neptune+Triton/Kuiper object mission is now available: http://www.lpi.usra.edu/opag/nov2008Meeting/presentations/argo.pdf
Less here on the science than has been presented in the past: http://www.lpi.usra.edu/opag/march_08_meeting/presentations/hammel.pdf
The mission backers are looking for two things at this point. First, a high ranking from the next Decadal Survey of planetary study (and missions) priority. NASA and Congress take the priorities set by these surveys very seriously. A priority for this mission would substantially increase its chances of selection. Second, the proposers want to make sure that key resources are available including plutonium for the power source and the large 70 m Deep Space Network antennas.
On another note, this blog was originally intended as an occasional message board. Postings have been more frequent than expected. I've added buttons so this blog can be more easily followed via RSS. Let me know if you would like me to take you off the mailing list for new posts.