I thought this was an excellent idea, and I believe the risk/reward ratio is highly in our favor. Bytemaster said that by the end of the year, anyone will be able to do this with smart contracts anyways, so the concerns about potential "regulatory crackdown" for gambling are a moot point. To turn down the opportunity to create some desperately needed utility for bitAssets at this point would be foolish.
As for user adoption, think about how many people play "bingo" instant lottery tickets. Hundreds of thousands? Millions? Imagine if they found out that they could play them online, using real money, to win real money. A lightweight wallet that you could fund and then play? And completely decentralized, so people from every country in the world would be driving the jackpots higher and higher. The upside potential is huge, considering the 80 hours it would take to implement. (bytemaster's estimate).