How about DSF with a Regulator handle?
Actually, I'd like to see a re-release of the differentially heat treated M6...
And heck, how about a differentially heat treated SR101 BWM blade with an M6 or DF grip???
Nothing beats differentially heat treated SR101, IMO. I'd love to see some diff treated SR77 give it a go, though.
Ooooooh! How about a Chopwwiler or Rat Mastiff blade design with a Res-C grip?