Let's combine ideas into a great idea:
Make the same frame and 4" folder, but use different blades and standoffs/spacers for each line; bronze washers, crossbar lock or something ingenious the Busse team came up with.
Busse Folder: harpoon w/ penetrator tip, flat saber-ground INFI, this is the bomb-proof thickness. Special Micarta/G-10 scales/inlay/onlay (Snakeskin/Stonehenge/Tequila sunrise/etc.).
SYKCO Folder: tanto, compound grind (hollow on the long primary bevel, but flat at kissaki), SR-101, less thick than Busse Folder. Res-C inlay/onlay.
Swamp Rat Folder: trail point / Persian slicer, Magnacut/SR-101, thinnest off the three folders at 0.10". Full height flat grind. Micarta/G-10 scales/inlay/onlay.
Swamp Rat Folder Alt.: Sexy Wharncliffe or Rats' teeth (New blade profile: just like'em rat teeth... Or a 'modified' sheepsfoot), Magnacut/SR-101, less thick than Busse Folder. Res-C inlay/onlay. Ragged micarta scales/inlay/onlay.