Yeah they never really use transporters and replicators to their fullest capabilities. Knock out their shields, beam the enemy crew to the brig (if you’re good) or into space (if you’re not so good).
Why bother with torpedoes? Just teleport bombs right on the enemy target.
They had self-replicating mines on DS9, why not self-replicating computer controlled starships? Send infinite waves of automated starships at the enemy?
Have your most elite Jem Hadar squad stand on the transporter pad and beam down infinite copies of them down to the planet. They’re cloning them anyway, doesn’t seem like the Dominion would have moral qualms about this.