My suggestion of showing more tragic slaves on Tatooine would hopefully show Anakin has already used his latent skills to rise above the fate of most slaves on the planet.
I wonder if the shot of Anakin giving some food (?) to Qui-Gon at the Market could be adjusted so he is giving it to a poor slave instead.
He dreams of coming back to free the others including his mother so while he is manipulative and ambitious he isn't selfish in the traditional sense.
He is just trying to make the world the way he thinks it should be, which is arguably something Vader continues to do (even if most people would disagree with him if they dared).