Ed/Winry is a hard ship to write (I´ve tried recently and failed miserably). Ed is hard to write. Teenagers are hard to write. Teenage love, though very tempting in its cute ankwardness, is a pain in the ass to write. I´ve not read that much of that pairing but I haven´t found anything that satisfies me yet (but I am a VERY picky fanfic reader) and it´s a shame. I think the pairing has possibilities.

Oh well. I have Hawkeye/Roy. They can be my FMA ship

Well, that´s always (very) good to hear.