The reason for not being able to edit the character's body is because different characters have different heights, and they didn't want to run into some major perspective issues during cinematic sequences. You can only get a super-cool face, but not a super-cool body.
On the upside, the devs do mention that they might look into replication codes as a feature that might – though there's nothing set in stone – be patched in post-release.Īs for modifying your character's body.