Fullmetal Alchemist: Brotherhood

[Sam98034]

Ed's leg didn't come back because there was no transmutation circle on it. Remember, Mae only threw daggers at his arm.

[Buffalobiian]

Ed's leg didn't come back because there was no transmutation circle on it. Remember, Mae only threw daggers at his arm.

That was only because Al reversed the transmutation and exchanged his soul for Ed's arm.

Eastern Alchemy was necessary because Al was doing it at a distance, and an arm sitting a few metres away from Ed wouldn't have done him any good.

To me, the Truth's words "Take it all" along with his actual disappearance means Ed got "Everything" back. It does sound unfair as it means Al got his Truth without sacrificing anything, but that's all the sense I can make of it.

From what I understand, everyone has their own gate - and everyone has the potential for alchemy more or less. The price they gave up was for opening it. If Ed decided to destroy the entire thing, it makes sense that he gets a bit extra.