As an example, apparently Mastercoin is releasing an exchange in March. It appears Folks will be able to trade a lot of different coins in a decentralized way. THAT IS AMAZING. I don't know how to get listed but I feel we BEST get listed on that (perhaps you don't have to).
This brings to mind another thought. If MasterCoin is successful at this, I would think the next step would be to allow folks to pay someone in one coin and have it arrive to someone else at another coin. This would be a KILLER feature.
Anyhow, this is probably in the wrong place but I feel that all discussions of structures should keep raw development talent and features as a/the main goal.