Stick Bender, I love your experiments. I prefer working with primitive materials, but modern ones sure make bow science easier. Have you ever explored the limits of reflex? If you want a challenge, could try something like this:
I call it the extreme reflexed, small working area, stiff ended, straight at full draw D/
R bow. ...Still working on the name.
But this seems like the direction of the ideal to me. It gets you the best of all worlds with few drawbacks. Light limbs with very high string tension from the reflex, good harmonics from the stiff outer limbs, good lever length and string angle from the deflexed handle in its finest form (straight limbs at full draw),
The only thing it lacks is ease of make. It would be pretty sadistic. I've never worked with materials that can take it, but you seem like a good man for the job. I don't know the limits of glass, but I know they're high.
Oh, and ease of use would be lacking too. Good luck trying to string the thing.
Though it should be easier than some extreme asiatic designs.