I think a planet with an atmosphere, tidally locked to kerbol, orbiting between Duna and Eve that has strong convectional currents would be great, with mountains poking into space, if weather could be made on this, space gliders grazing the peaks.
You may want to use the flag module on your munbug's. Theres a tutorial here:http://forum.kerbalspaceprogram.com/threads/35225-Some-lesser-known-bits-of-info-for-addon-developers you may want to check if it keeps munbug stock.