Guns I wish S&W made or would make now:
The previous configuration of the J frame all steel/stainless steel 38 Special only versions of the Model 36/60, Model 40/640, Model 49/649.
Model 10/64 (2" and 4" standard barrel and 3" heavy barrel), 15/67 with 2", 4", and 5" options.
Models 19/66 in 3" with proper sights - no barrel compensator and no set-back front sight, and 5" barrel to go along with the 4" available now.
Model 12/612 (my choice of model number for the stainless Airweight version) in 2" RB and 4" RB. The 612 would be alloy frame with stainless barrel and cylinder, same color as current Model 642.
Model 17 with 2", 4", and 5" options.
A modernized "Registered Magnum" with all of the engineering improvements, with the ramp and front sight set back to look like the originals with various sight options and barrel options similar to post-war, but with additional choices as follows: 3 1/2", 4", 5", 6, 6 1/2", 8 3/8".
Model 29/629 with 8 3/8" barrel option added to the 4" and 6".
Model 39-2 with current engineering improvements, and have it look like the original 39-2 with blue finish and wood stocks. This is, by far, the best looking auto loader S&W has ever made.