Thin is part of getting low deflection in a solid wood cue.
I assumed wood CF hybrids would come along. I just heard about a cue that had 10" CF at the tip, another with 20". Interesting. If you could get the transition to work the CF section might be possible to make true zero taper. Then again, I can picture them becoming an abortionist's nightmare if it flexed back there at the transition with little or no flex closer to the tip.
CF is going to open doors, already is opening some. Being able to change the inside taper or wrap angle opens up a workd of possibilities without changing the outside taper. A shaft that played like a traditional shaft with a zero outside taper would be sweet!
Along the lines of new things, I also consider a CF shaft with very little rise all the way to the joint then a joint that isn't the same diameter on both sides. The CF opens a new world of experimentation. A few years back I would be trying to find or build a CF wrapping machine. I like the possibility of a tapered or even multi-tapered arbor to wrap the CF on so a lot of the way a shaft played would be because of the inside taper of the CF.
Hu