Cocking indicator dropped along with the 7 3/8" bbl (to 7" bbl)to cut costs. The 5" sport, 5.5" EFS, and the 41-1, along with the 46 were all dropped earlier. A combination of demand and cost reduction from multiple setups, inventory.
Note that rear sites were varied in attempts to cut costs. The only reversal to product line slimming has been the 5" nonsite bbls and the adding of D&T for scope/dot units.
Basically all aftermarket bbls were modified S&W bbls until Bully Bbls came along.