How long should ocp's and the occasional exp. Lap. Be used to treat endometriosis? Are there any better long term surgical options available?

Yes. Many people have success treating the causes of hormonal imbalance associated with endometriosis using elimination diets, anti-estrogen diets, and reducing exposure to toxins and pesticides through organic based whole food diets.
As needed. Laparoscopy should be used to remove all visible disease and in severe cases the appendix as well . The medication is used to suppress the disease.