Or in the 70's, Aluminum cues, they came in pretty colors too.
I remember a time when I would visit my best friend's home, this would have been maybe 79 or 80 when were both entering high school, and we would play on their family pool table. They had an aluminum cue among the available cues for people to use. And I remember that the cue was warped enough to satisfy W.C. Fields. I dont think Aluminum cues lasted all that long in both quality and in the marketplace.
The biggest evolutionary change in cue design has to have been the move from the mace shape to the current form design. Everything else in terms of technical development has to be considered incremental. And I am sure that additional developments will continue to take place in the future. But I dont see any new major changes in the basic cue form taking place without some major changes in the very fundamentals of the basic games played.
And I dont see that there is a need to do so. The basic form of the game and its equipment I think is pretty well set.