Yeah but who would want to pay for it? I'd wager that shooters are rather accustomed to paying very little for their Italian cap `n ball pistols and wouldn't pay a little extra for a little extra attention to detail. Few are willing to spend $500-$600 for a 2nd or 3rd generation Colt Blackpowder gun, at least, as a shooter. If USFA built percussion pistols, how many here would spend $800-$1000 for an 1860? I would, but only if it was a cartridge conversion.
If money was no object I'd buy second gen Colts but not third. I MIGHT would buy a USFA but unfortunately at this time in my life money is an object. If I was stuck buying 800-1000 dollar guns these days I wouldn't be doing any shooting.