Trees!
We are currently looking into geodesic grid systems as a way of modelling and generating our world in the future. That is still a long way off though. Some inspiring links:
Geodesic grid - Wikipedia
Procedural Planet Generation - Experilous
Discrete Global Grid (DGG) software
Spherical Geodesic Grids: A New Approach to Modeling the Climate
Interpolating To and From Spherical Geodesic Grids
Geodesic datastructure
Whilst we could just generate a flat, infinite landscape based on procedural noise like most sane folks, using some sort of approximate simulation approach might allow us to generate landscapes that appear ancient, with a long geological history. Hopefully by actually modelling this stuff we could arrive at something much more interesting than I could ever imagine.












