You forget that nobody cared about any medical innovations, it was just a Rumsfeldian pretext. The main goal was to gain new allies against the Dominion. Picard pointed out that the So'na are a bunch of "petty thugs" while Dougherty arrogantly believed that the mighty Federation could deal with them.
Not incidentally this Federation-centered arrogance is also present in the arguments that view the well-being of the Federation as supreme good in the galaxy. Well, arguments is a euphemism, rationalizations for imperialism is more precise.