I think there is a lot of interest out there for a Native Chief LW, since this has been asked for several times already (among others by me).
As always, I guess before Spyderco considers producing expensive FRN molds, the Chief has to proof itself as a hit and well selling model.
Furthermore, other than the Police, it has no liners anyway, so it IS already rather lightweight... still, I´d prefer an FRN version too, and the a little smaller size than the Police (but still being a large folder) would suit me well.
I think there is hope, since the "family member" Native 5 also comes in linerless G10 PLUS in FRN. But then, the Native 5 will probably always sell better than the Chief, and be it only for it´s smaller size that goes better with the legal restrictions in many places.
So: To make a Chief LW in FRN more likely, one would probably have to help the sales of the current G10 model first... (tbh, I myself did not buy one either - yet. And now the Siren might be, what I´d even prefer over the Chief...)
Top three going by pocket-time: Endura 4 in VG 10/Micarta-scales; Stretch 1 in VG 10; Endura 4 in HAP 40