Ah, so there is an ME forum on the Outerra web site?
Getting the download to install and run is vital to bringing back and attracting new interests. And, I do believe that there are many who would be interested in this project.
The demo that shows how waterways can be added are fine for canals and such, but I envision the ability to use the terrain and climate to create the natural waterways, rapids, and falls. I am a software engineer and do have some ideas on how this can be done.
Anyway,... I do hope this dialog becomes "...will be like the falling of small stones that starts an avalanche in the mountains." <G>