A few ideas:

1) An all-around camp food prep knife. Maybe, as someone suggested, a 154cm Santoku with Mudder grips. Or a flat-ground chef-style. Just in stainless and a bit thinner than regula(tor), to make it a slicer. Or maybe even a camp/hunting set!! (Maybe a Weiner-style for small work/skinning/filleting, a Chef's knife for all other cooking chores and a steak/cutlery knife to help you eat your catch/game!)

2) I like the idea of a folder; but all the extra components that would need to be made in-house may make this a little too labour-intensive compared to the usual process? But a nice, thick 154cm (or even do two types- sr77/sr101 and 154cm) blade with a simple, strong liner lock would be nice. Just a plain clip-point blade, but made simple, comfortable and strong.

3) Maybe you could do a "World Chopper Series"? Take some chopper blade types from around the world and re-do them with Sr77/Sr101 (Or INFI for some LEs) and Res-C for chopping strength and comfort. You could do goloks, machetes, barongs, etc, etc, along with traditional Western choppers and Busse-style choppers. It might also be an excuse to re-release the DF...

4) +1 to a neck-knife...

5) +1 to a camp axe...

I might come back sometime and add some more as I think of them...

David.