Looks like you can get a share of the profits from trading fees - which is an interesting business model.
I won't spam y'all with my link - am certain that would get a downvote - so, instead, will just point you in the direction of http://wcex.co.
Their timeline and roadmap? Well, to be honest, they don't look too aggressive - that's something that has gotten a few ICOs in trouble in the past.
Here's a screenshot from the website.
I'll do a more in-depth analysis in the days to come on the Metacoin site, but, rest assured, there will be yet another player in town.