I had a dream, it was both crazy and beautiful. I had launched Terragen Classic and saw an advanced yet clean and well arranged interface. In addition to the usual editors (which got a massive overhaul), there were also editors like character editor, model editor and game logic scripter. I spent a lot of time in this dream fiddling with material and atmosphere editors. The former had full PBR and procedural creation matched with Terragen's usual material properties. There was a nifty window with an example scene - selecting faces on it adjusted the material to slope of the face and its other properties. The atmosphere editor had a real time preview window, enormous amount of sliders and even more preset examples that were great on their own. I had tears in my eyes when working with that suite.
A man can dream, but a question is: What if Planetside made game dev tools?