Very, VERY lame moves by Robin and Franky, though Franky got his spotlight later on. Makes you wonder if Robin ever will do something else than clutchin´ fodder and the occasional "save-the-day"-move like her wings or delfinium.
Robin's main purpose on the Strawhat crew isn't to fight. But what else do you want her to do with her powers? Kick people in the nuts with feet or stomp them with 100 feet put together into a giant foot?
P.S.: On a sidenote, what the heck is wrong with the World Government?
They give a fighter/cook ( who is NOT the captain ) a bounty of 77m berry, but a guy who trades human lifes for money / sexual favors and built a whole hiding place to do so gets NOTHING. He runs a slavetrading business at the freaking middle of the biggest ocean of the world, but he has no bounty (that we know of). Even if he had one, being so afraid of bounty hunters that are after a 77m guy his bounty can´t be enough to attract bounty hunters that have travelled half the GrandLine. You can do everything you want unless you don´t set the Jolly Roger. That kinda freaks me out.
Only Sanji directly attacked a government official, destroyed a major piece of government property (he was the one who shut the GoJ and also along with the other strawhats took down EL) and Duval said he didn't come out to sea until recently to look for Sanji.
Besides, Duval's slave trade seems limited to this area. If he was a major human trader we'd have heard at least something about him before, at least a name.