In doubles, we often forget what is the purpose of a smash?
More often, it's to plant the shuttle on the floor.
However, the smash loses much speed as it travel down from the halfcourt position to the opponent's mid court area.
I believed the smash or the (advanced player's) jumpsmash is to setup the netkill.
I like to call it the one-two punch or two hit combo. Jumpsmash-netkill combo. Ok, here is the 2 hit combo...make it a 3 hit combo.
The most satisfying shot in doubles imho is the netkill.
It's aggressive, it's fierce and it's is often terminal...
Nothing is 'more in your face' than a netkill.