I would agree with this, with current price of ETH around 0.1btc/$234 minimum bet should decrease, the sooner the better.
Because I see recently new gambling site popping up start use ETH and smart contract.
I wrote about it even when eth was a bit more than $100 and so did others. Minimum bet must be decreased or otherwise people may stop using the site. I don't know how many people play here now but I think that min bet should be 0.03 or something like that. Then it is okay to create an ANN thread in Gambling section to attract gamblers as well since scamming is a popular problem in that sphere.