Hi everyone, I'm still interested in the project. Anyone know where I might be able to find someone who could make this extension a reality?
I think Andos has managed to make a raycaster in MMF2 before using the Overlay Redux object, and he's also made extensions before, and he's been able to make a raycaster using the Navigation Mesh object (which he made) and the Surface object as well. He's also made graphical extensions before (he made the parallaxer object), so he seems to be able to make graphical extensions. You might want to ask him about it.
Here's a fairly simple and fast 1-reflection raycast example I made a while back. https://dl.dropboxusercontent.com/u/...%20Example.mfa It can be adjusted to suit however many reflections are needed, but it's limited in that it requires more events in order to add more reflections. If you ever need a simple variation of raycasting, this could be it. I used the advanced direction object, but you don't really have to, and the surface object which is simply for visual purposes. Everything else is done with active objects.