I'd like to see statistics on the relative success of all medical procedures. I think you ought to be able to see exactly how successful the different options are, including alternatives like massage, exercise and nutritional approaches.
Being able to how well each option works for people of varying degrees of health would also be useful. Some options may work for the morbidly obese but fail miserably with Olympic athletes.
Such data would be very difficult to collect but could help people and organizations make better choices.
Note that one problem here is that the success of individual surgeons is highly correlated with how often they do a procedure. I.e. a raw rate for surgical success won't necessarily tell you the odds of the surgeon you end up with.
Being able to how well each option works for people of varying degrees of health would also be useful. Some options may work for the morbidly obese but fail miserably with Olympic athletes.
Such data would be very difficult to collect but could help people and organizations make better choices.