I am so much looking foward for a Planetary simulator where we can load up our heightmap , dispose on the planet the major tectonic plates, decide all features, like age, rotation , material , volcanic activity , etc etc ...
then allow the simulation to work and show how would affect the custom heightmap as a starting base ...
then allow to export the several maps or data from the simulations , so evolution of climates, of volcanisms, of geography , sea levels and so on ...