Since a week, Michalis is a Professional Member of the Web3d Consortium. These are the people who make X3D specifications, see also our documentation how X3D fits within Castle Game Engine. By being a “professional member” I will have some extra access (e.g. to see draft specs of upcoming X3D versions) and some influence to take X3D into interesting places 🙂
My vision and goals for X3D is documented publicly in my “x3d-tests” wiki. This wiki contains an overview + lots of details what I would like to see in X3D standard. Many of the ideas revolve around bringing X3D more “aligned” with glTF 2.0 feature set. Which is of course closely tied with getting glTF 2.0 into Castle Game Engine, as an X3D scene graph. I believe that this is a solution in which everyone wins, i.e. we will have an engine with perfect interchange format (for which glTF 2.0 is now better, although X3D tries to catch up) and a perfect scene graph (where X3D shines already).