Sal, I don't expect you to divulge how much FRN tooling would cost, but it stands to reason that only knives sold in sufficiently high enough volume merit a FRN version. About how many models out of the current line up would sell well enough to justify this investment? If you would rather not say, I understand as well. It is fun to come here and start throwing ideas against the wall and see what sticks. But I don't want to waste your time suggesting things that just aren't feasible.
Perhaps a compromise is in order. Use one of the existing FRN platforms, but use the Lum Folder blade shape.