I love the idea of taking the focus away from the non-key or non-positive actions on pages to keep users on the 'right' path…

thanks for your comment. I hadn't thought about the options you talked about. Thanks for brining those to the table. A smaller button or just a link for the "Fold" option would work better then. And to be consistent in the alert, positioning the options in the same way as below. I'll update my post with another version which keeps the "Fold" button.
Regards
Staffan

Interesting idea but there is a few times where you might want to fold – even if you can check.

You could, for example, not want to risk having to show a hand which you have played in a certain way, such as aces or even some rubbish hand that you've made a play on, when you are sure you are beaten to maintain the mystery surrounding your action. Equally, you might want to get out of a hand that you are in to advance your position in a tournament – preferring to let short-stacks in a sit-and-go fight each other rather than risk doubling one or more of them up.

Maybe this is a case for somehow reducing the focus on the negative action , fold, in favour of the positive action, check. Maybe a smaller button?

M.