Pawel G., one of this blog's readers, sent me two links to sites the describe Russia's planetary ambitions. I don't read Russian (those Russian classes in college a few decades ago went to waste I guess). I believe that these are wish lists much as various scientific communities in the United States draw up lists of missions they'd like to see fly. I doubt that Russia has or will budget the funding for more than a few of these. If any you know differently, please let me know.
The first website, http://www.novosti-kosmonavtiki.ru/phpBB2/viewtopic.php?p=257249, per what I could gleam using Google translate, discusses a list of missions of which Phobos-Grunt and Venera-D I believe are approved (the former is largely built). Grunt in Russian reportedly means 'soil,' so the grunt missions below are probably sample return missions.
The second presentation, http://www.novosti-kosmonavtiki.ru/phpBB2/viewtopic.php?t=8434, appears to be from a conference and is partially in Russian and partially in English. This presentation lays out the engineering approach to enabling a number of missions. In this approach, standard modules such as in insertion module, a cruise module (also shown with landing legs, so perhaps the science platform module might be a better description), and a sample return module would be combined for different missions.
It's good to see Russia returning to planetary exploration. The idea of modular spacecraft stacks is intriguing, and might be key to enabling a number of missions while holding down costs.