Well I'm not sure about that, felt more like they made them look like that to emphasis the fact that he transmuted a new pair of legs. Kinda like how Kimblee explained that there will be traces of a alchemy being used after they use it, think he mentioned it when he was hunting after Scar. Same as how Ed found the underground passage, because you'd normally think the government can cover up a wall better than that, but if transmuting something always leaves some kind of trace it makes sense.
I'm not sure if this is correct now but doesn't overusing alchemy tire out the user? At least in the first show when they showed a guy transmuting that tower, he could barely stand afterwards. Then again we've never seen Ed get tired or anyone else but if it applies to them as well then he might be saving energy to fight the bigger guys. But other than that I do agree that he should use his alchemy more.
Didn't Ed transmutate coal into gold when he tricked Yoki? Not sure if that counts though. And a spear seemingly made out of metal from the ground when he did the practical alchemy test. Other than that I can't really think of anything.Originally Posted by Dark Dragon