I just remembered the last (only) JFET limiter I ever designed.
Back in the 90's while managing mixer engineering inside Peavey I oversaw the transition between spring reverbs and low cost digital multi efx, for use inside my high volume powered mixer skus. To deliver better than horrible S/N they used copious amounts of HF pre-/de-emphasis in the digital path. Sadly in some settings even modest amounts of HF signal content would overload the digital registers (my speculation). They provided an overload LED driven by the digital processor, but it was not linearly related to input level, but HF content "and" algorithm selected, so all over the place in real world use.
In trade show recording demo's where I had to show the Peavey digital multi-efx in a good light, I was able to make them suck less by inserting a de-esser in front of the digital box's audio input...
Since we could not afford to put a full de-esser inside a cheap digital multi-efx card, I did the next best thing... I added a simple JFET shunt limiter in the front end of the efx processor audio, and used the overflow LED to turn on the JFET with appropriate fast attack, slow release.
So for around $0.50 we made the digital efx all but impossible to overload (making a silk purse out of a sow's ear).
JR
PS; I didn't literally do the design myself (I was the engineering manager after all). I told the junior digital engineer in charge of the efx subassembly project what to do, and then blessed the result when it didn't suck. Not very heavy lifting.