This that work well with the Privateers is either Gadgeteer or Enhancement. They would know best what kind of equipment they need and being connected in Danny's network would allow them to deploy buffs and debuffs where it is needed. I don't think they need someone really tough like the Knight since they do low tier stuff and are mainly doing guerrilla type fighting. Unless being mage'ified makes them immune to Danny's power, but that only makes applying debuffs a little more difficult rather than anything significant.