Well for starters, make sure that you only include swords. If you included Katanas, all of your players would be trying to get one, since they can cut through bullets and are the best weapon... ever, really. So only include shitty euro-pee swords.
Second, martial characters have always been overpowered, and honestly giving them swords isn't going to change that. So you should cater your game to include more OP people with swords - though preferably make them DMPCs, so you can show your group just how cool you are.
Thirdly - and this is most important - if all of the PCs are women, then they'll have less strength, which makes swords worse. If you do run a game with swords, request that they all play female PCs, regardless of their prior plans.