Stick a Great Sword on it and wear alot of Attack and STR+ gear with some Accuracy and dex+ in there too and you have yourself a mediocre DRK!

In other words you can turn it offensive but it will be in the middle of the pack in damage. Out-damaged easily by the DRKs MNKs and even DRGs in the game.

My preference is to keep PLD a tank as it should be.