I'm going to be working on the plugin soon
Oh man, that's great news.
The way animations are handled by events could use some restructuring and simplification, no? Lot's of people are having trouble getting animations to work.
Maybe we could get shadows to recognize alpha values of a texture, so that, for instance, patches of leaves on a tree don't just cast quad-shaped shadows.
Oh and perhaps there's someone somewhere willing to make the necessary improvements to the Blender exporter script. Multi action export would increase the value of Q3D tenfold. Maybe you, being the plug-in's creator, have better chances of getting someone to do this than any of us.