I have an idea for a revolver that I think would sell very well, and I'm a little surprised that Smith doesn't make it already, or hasn't in the past.
-K frame sized, 4" half-lug barrel, adjustable sights, 10 shot 22lr, target trigger & hammer, with an Aluminum / Scandium frame and Titanium cylinder.
I love my 4" 617 10 shot, and my 3" 317 8 shot, but something in the K size with 10 rounds and able to use the speedloaders and various K frame 22 accessories but nice and light would be about perfect. I think they would sell a bunch!