Many people obviously wish for more (LC200N) Salt knives, often for mid size PM2-, Stretch-, Endela-sized ones.
One thing Spyderco probably has to consider in that regard are the costs for new FRN molds.
Now: Actually it looks like they already DO have the molds for perfect mid-to-large-sized Salt knives:
The Atlantic Salt handle!
See comparison pics below, looks very much like a PM2 handle with the potential added bonus/comfort of the FRN chamfering. The Atlantic is also a bit more compact/shorter (Closed length Atlantic vs PM2: 4.59 vs 4.81) while essentially still offering the same grip area and can house blades at least up to 3.68".
Now why not just give that handle a more common LC200N blade additionally to the existing sheepsfoot version?
Considering choil, backlock and handle shape, this could come pretty close to a Salt Stretch for example.
What do you think? Multiple votes possible!

