That's actually not a bad idea, I've also thought that it would be pretty cool to have that option on dice games.
Just so you can bet on a certain number, just like when you're playing roulette.
of course, users want something new and innovative, a user may already bored with just guess high or low, I also like the option to choose one of the numbers roll or advance any other, I think there are some sites dice are on the game and amenities advance roll, like directbet
you might try dircetbet there are many options advance roll with variations odds