We intend to build out functionality to let us offer programs around specific goals. The quest system is a precursor to this, but the idea is to have a fun way of offering structured guidance to the user and move them to specific outcomes.
And believe me, I'm in agreement with you about cardio. It's pretty worthless in many cases :)
Everybody always wants cardio. I think because that is what most people do. But that isn't going to make you fit by any useful definition of the word.