After seeing minecraft and being totally disgusted that people play it..or moreso that I didn't think of it I started working on more terrian. This terrain is fully editable and uses texture splatting to arrive at the final color. It mixes 7 separate textures and the height is computed in a shader. The only thing I cannot do yet is light the thing b/c the normals do not exist until the card grabs the height from the heightmap. I will have to use a normal map but I am running out of texture slots.
An early screenshot of what you can produce with it: