Perhaps the changeling considered it not worth the risk to try something that would have injured or killed Sisko.
I mean, if the Dominion was confident enough that they would win in the long run, they probably figured that the changeling might as well do his best work anyway. And the changeling probably DID have the medical knowledge it needed to play Bashir convincingly...
I mean, if the Dominion was confident enough that they would win in the long run, they probably figured that the changeling might as well do his best work anyway. And the changeling probably DID have the medical knowledge it needed to play Bashir convincingly...