I'm in other fandoms. (A quick glance at my userinfo would have uncovered this fact to you. However after I clicked on your userinfo, I couldn't find any other fandom or interest.)
But my question was directed only to the FMA fandom. (This being an FMA fanfiction, what was advertised in the FMA fandoms.)

I know there is a lot of wank in the LotR communities I'm not part of, there must be more in the HP, but there is none in the Highlander. I wonder why...

As for changing/saving the world. I'm not interested; I don't think the bigger part of mankind deserves anything else than the bullet to the head. (Yes, I'm including myself here.) That said, good luck to your quest. *bows*