While I'm finishing my exams (and I hope my degree with them), I think it's time to make a "final" design for the first version of Schranz VT.
Talking with Josep, he suggested me to use an opensource engine for the 3D graphics. I started this project as a way to improve my C# skills and at the time, learn something about DirectX (I have always worked with OpenGL).
I think that using an opensource engine is a good idea as it will allow me (and I think other developers too) to apply all my efforts in GUI (I started this project because many VJ tools are not so user-friendly) and effects design.
At the moment, I'm trying to understand the Ogre 3D architecture, so in January (when I've finished my exams) I'll start making the final design and start coding.
Drop a comment if you know a better engine or have any new idea.