Hi there,
i'm proud to announce, that i will have a discuss about this at our computer graphics department later this week.
We will hava a closer look to the existing code and consider which way could have the best potential.
At this point, it is hard to say, which task can be delegated to OSG and which one has to be done by FG.
But I'm sure, that a proper design and refactoring can handle this stuff.