But both Liz and Patty said themselves they can't fight at full potential without Kid. The weapons seem to have SOME residual soul wavelength, but not enough to be truely autonomous (Except specific examples like Justin). I believe Liz and Patty can only fight alone because they bounce their soul wavelengths back and forth until they're strong enough.
CirusArvennicus said
That's your opinion and you're entitled to it. But I'm not buyin' it, so Demon Weapons cannot use wavelength. Not until they're Demon Scythes, but at that point, you've transcended 'Demon Weapon'.
What's my oppinion? That Justin was an autonomous weapon? That's not an opinion, that's a fact that was directly stated by Stein in the manga. Just about the time he started beating the shit out of him with Marie.
I think if they took the anime, continued from where they left off and didn't change lines back to the Manga version, it could become a really interesting Divergence and could change the entire story. I honestly find it REALLY boring when an anime follows the EXACT path of the manga, because then there's absolutely no point in reading them both, which is why I dislike FMA: Brotherhood.