Maybe making changes to it could help though. For example:
1) Create an automated bot so people can choose to play vs. a person or the computer. If computer, it would need to be provably fair (and I guess you would need to work out some mathematics to figure out how to keep a small percentage in your favor or something).
2) Allow users to each place their own bet. For example, I want to risk 3 BTC. You want to risk 5 BTC. If I win, I get 3 BTC, if I lose I lose 3 BTC. Same goes for you but with 5 BTC.
(I'm not 100% sure how that would work out... I was thinking about it as being... you're taking a cut for the house, say 2%. So it'd be kind of like Blackjack or something in a sense. It's a little hard to explain as I'm not sure about the math behind it off the top of my head, but I think it would be doable)
Yeah, an automated bot would be great indeed, but yeah I'd probably do a 1% house edge or so. I'm leaving this open for a while, see if there's interest.