Actualy I am a firm believer in jagged projectiles, and the concept expanding talons is a good one.
If you research how terminal balistics work you will find the actual damage caused by a pistol round (dealing with non-existant or inconsequential hydrostatic shock/damage) is reduced because tissue flows around the pistol round. Sharp or erratic edges will cut more of the tissue that would have otherwise "flowed" around the projectile.
That said most of the hype surrounding Black Talons that has lead to thier prominence and demise was based on false media impressions.
The evil sounding name simply lends itself to that. Black Talon sounds like something out of science fiction, representing a sinister product.
When the media learned it was a lubricant similar to teflon they were coated with, knowing it is a lubricant they assumed it allowed them to slip through body armor.
This is counter to logic as a rapidly expanding projectile will penetrate worse than any other round. The greater the surface area of resistance for a given foot pounds the better body armor would in fact work against it.
Well expanding ammo works to increase the the surface area facing resistance for a larger wound.
The media was just plain wrong. A round for both expansion and penetration can be designed, but it is not what a Black Talon does, or any civilian pistol ammo.
The incorrect logic however likely stems from the fact that ammo actualy designed to penetrate soft body armor is actualy coated in something, not to increase penetration which it does not effect, but to decrease barrel errosion on the gun since the ammo is likely made of a very hard material. The same round without the coating would perform just as well, it would just be rougher on the barrel. Black Talons however are NOT such ammo, being in fact the opposite.
The misconception stuck though, and they were in addition to thier other "evil" features, associated with being better for killing cops (because no criminals use body armor, and the 2nd Amendment doesn't exist precisely to be capable of resisting government equiped tyrant's who in modern times would be wearing body armor
)
This may have actualy saved some officer's lives, as criminals sought one of the worst performers against soft body armor. So I would argue that taking Black Talons off the market actualy increased the danger officer's face as they will no longer have foolish criminals confident in a capability that does not exist. Instead criminals will use other ammo without incorrect assumptions about the capability of the ammo.
Black Talons are really little different than most other expanding ammunition, and since Black Talons by name are now a collector's item they are not worth spending the extra money on for actual use.
A sinister name, a dark color, and the use of relatively new materials in bullets for the time in the form of Teflon (at least to the general public) left them demonized. This has caused many people to believe they are more effective than they really are. Obviously as your post illustrates this trend still exists.
Now all of that said, I would like a commercial round that generates sharp treatment hardened edges that tissue cannot flow around without being knicked, and resists being peeled completely back. I think that will cause more bleeding for a given diameter wound, leading to slightly improved incapacitation. At a much higher cost per round I know a mechanicaly designed round could do exactly that. Having connected petals that only open up to 90 degrees and then are locked into place. Such rounds would however be cost prohibitive to produce or use.
However in light of previous issues, calling them Pink Bunnies might be appropriate.