I agree with you that a battle system could be more addictive. I'm just not sure how that would work with something like movies or artists, where the user alrea

I agree with you that a battle system could be more addictive. I'm just not sure how that would work with something like movies or artists, where the user already has an opinion on the two options, which might not be that comparable (eg a comedy vs. a drama). For puppies, kittens, or people, it's always possible to make up an opinion on the spot.