I had my doubts about both features, but I've proven wrong. Those are really nice ideas. Battleships can jump, that'll make much fun. They only need a trader-buddy who unloads some hauls of fuel besides them. And traders cloaking? C'mon that would mean they load a portion of their cargo with fuel, that's a loss of profit. Pretty much if you ask me. I think we'll see only a few cloak-traders.
But I foresee much fun uses of cloak in group piracy... just imagine a... nope, I don't want to tell all my cool ideas here...