Ever hear of Hardinge of Elmira, NY? They produced a famous series of machines for toolrooms and the watchmaking industry 100+ years ago. That series of lathes was named Cataract. The largest was the Cataract 5. All of them were small and would fit your "too flexible" sobriquet. But they were very popular. So popular the whole world still uses the patented collet system designed for them. That's the C in 5C.
You might learn something reading this:
Cataract Lathes - high-precision American-made for toolroom and experimental shop work
www.lathes.co.uk
I suppose the first time you picked up a 5C collet, you were full of wonder
"I wonder what the 5 means, and the C, what could that be for?"
"I wonder why it's xx.x" long?"
"Why did they choose that thread, why the 60 deg angle on the thread?"
"So what's special about the angle of the taper on the collet, why did they choose that angle?"
etc etc
And then you did exhaustive research, and after a few hours of reading you are an expert on 5C collets,the size,the angle etc etc. You were probably intrigued as to why 60degs for a thread form, and researched back to the English Industrial revolution and the evolution of machine threads, but that wasn't enough, you did a deep dive into threads, back to Babylonian times.
And know your the worlds foremost expert on 5C collets.
-------------------------------------------------
Me, I'm a philistine. My only interest in 5C collets is:
Do I have the xxx diameter I need, and where is it in the rack?
------------------------------------------------
As a research scientist, at some point you have to pull your head out of the sand and wonder where all this research is getting you. When you were doing this is a job, there has to be some ROI.
Maybe the intellectual challenge is the ROI for you. There's certainly no ROI in making that Clausing something it isn't, was never intended to be, and never will be.