Just about everything we make has gotten better over time and made what came before obsolete
So just for the sake of argument let's say that Gus Szamboti cues are the best ever made.
Will there ever be a time when they would be considered good but not the best anymore?
Has the art of cue making reached it's limit?
No not at all, i have seen more changes in the cue world in the past 18 months than the past 18 years, for years what cue makers did was a secret or people just didnt have access to the information. Now with the internet, CNC and the shareing of ideas were seeing cues like never before.
For example SVB is staying here this week, I hit some balls with his Cuetec and let me be the first to say that cue is for real, I have some 10 year old ones that are horrible. What they are building now play great and they arnt expensive.
On the custom side look at Gilbert and Jacoby their fancy cues are off the chart these days, 3 years ago they were good looking cues with rounded edges because they were limited to the diameter of the bit, now they have it figured out how to make razor sharp points, diamonds etc with new equipment and teckniques. Same goes for Black Boar.
As far as playability more is known about wood these days and with that knowlege cue makers like Eric Crisp aka Sugartree makes some of the best looking and playable simple cues with no inlays. He is a genious with wood. Barry Szam builds better cues now than he did 10 years ago, he has some of the best wood there is because its old, Old wood is the key IMO to sweet hitting cues assuming the the construction of the cue is good.
Gus was so far ahead of his time and he rightfully will go down in history as the all time best cue maker, he blazed the trails for the top cue makers today. Same for Bushka.
We have alot more to look foward to in cues, will it ever peak out? no its like fashion it will just change, the new trend is bumperless cues, 15 years nobody wanted one now with high polished SS screws they are selling great, so the style of cues will change thus keeping it interesting. and the vintage cues will awalys be traded among the people who are into that.
it aint gonna end, just change its looks over time.