Creating some “general dock” for every engine under the sun seems like a waste of effort.
Now, a “Crystal Space specific” integration layer on the other hand…
In my view, that’s really the only thing that could bring things back from the slump -> If CS and Blender integrate to form a new BGE (not just an exporter to CS)
I don’t like the whole “exporter” approach, because it takes far too long to go from modification to test. If push came to shove I would definitely “settle” for an exporter over an unstable engine, but a complete integration I described above would be the ideal situation in my view.
It’s hard to know what the options really are, but I do know that there has been plenty of talk before.