I've finally persuaded wetsuit to take a serious look at LN. It came from a discussion we had recently about our dust problem (229 BTC that's too expensive to consolidate).
I'll gladly open a Lightning Network channel to freebitco.in once the option becomes available. As to sweeping the dust, can't just you just sprinkle a small amount via every withdrawl? It might take a little while unless you wait for an opportunity when fees are low and you can sweep some/most dust in a series of transactions.