Bob have you thoght giving Anakin some extra reason to wipe out the separatists in Mustafar?

I know we've discussed this a lot, and it exclusively depends on what is the actual "profile" you've chosen for Vader's character, but considering he`s not just a maniathic murderer, but someone who hasn't any hesitations when he wants things to be done (I think THAT is the real charactristic of a Sith, not havin any scruples at all)... I mean, if he was just a a tyrannic maniac he would have killed Lando, wouldn't he?

So the thing is, I thought that what would give Vader the reason not to let them live is that they found out who Vader actually was. And this could be done with shots of the movie that are already there, it'd requiere to add just some sound of astonishment, and someone in the background saying "commander skywalker? (!!) The war is over! lord sidious promissed us peace!"... and then right to the slaughter.

But keeping Anakins identity a secret no one must know would imply that there's still someone who could represent an actual danger to Anakin and from whom the Sith should remain hidden; so guess that'd be the Jedi Order still standing, and no Empire yet.