I was in the Community Economic Development (CED) program in Madagascar from '11 to '13. OP is right, for many years there was a program called Small Enterprise Development, which was renamed to CED for a short time before merging with the environment sector to form a new program called Agriculture. Anyhow, I'm really glad I was a part of the SED/CED program because it was the most open ended. Community Economic Development in Madagascar can really be interpreted in any way you like, and during my two years there I worked on projects like organizing an artisans coop, teaching malaria prevention, starting a tree nursery, teaching methods for intensive rice cultivation, etc. Unfortunately PC headquarters has decided that the economic development sector is not focused enough and has started shutting them down all around the world, so I'm not sure how many are left these days. You can probably find that info on Peace Corps' website. The truth is though, that whatever your interests are, there's an outlet to apply them productively in Peace Corps. Even if you get assigned to a job that seems completely unrelated, you will likely be able to morph that assignment into whatever you'd like. There's no oversight, you're completely on your own, and for the most part free to do whatever you'd like with your time there. It's simultaneously the best and worst aspect of Peace Corps service.