I think he left after the forums switched hands. Don't think he really got over that one.
Then of course you joined just to confuse us all. <_<
And considering that post was 2 years old, I can see why you didn't find it. Nobody has really done much work on stuff like that lately. Although, it could be a lot of fun for cool new levels. On the other hand, tech trees are pretty big and it takes a lot of work to figure out a new one just to play one new level.