How old was Nog when he was scrubbing table tops?
Family was a loop hole, but I remember some talk about the immorality of letting children use the holosuites... Although immoral only sometimes means illegal.
Massproducing the Ocampan bioweapon.
The Federation will be fiddling about husbanding Kes' offspring, but the second the Dominion manages to capture one of these genebombs, they'll clone the shit out of that Ocampa until....
If the Federation doesn't win with a first strike they will lose in any arms race because they have limitations to their science that less fraidycat species are capable of dealing with adult situations without sticking their fingers int heir ears and humming.