Finished a prototype for the viewport camera, and plugged into Interop services for asynchronous keyboard input. I had some issues getting the native .NET events to fire properly (if at all), but this method seems to be working as expected. The camera will be using a fly approach, as six degrees of freedom will permit viewing from all perspectives. As a usability feature, I am toying with the idea of having preset orientations that can orient the camera in a certain manner. For example, isometric could be selected to switch into a 2.5D perspective, yet not restricting movement on any axis.
Entity instancing is almost finished. A hacked together version works, but a little bit of work is left to plug it into the entity designer within the editor.
I will be working on a comprehensive feature list and overview of both the engine (Nexus), and the editor (Nexus World Builder) sometime within the next week or so.