I’m surprised that there isn’t a cgi fan edit team that would update the cgi of both the prequels and good cgi scenes from the original trilogy like bespin etc.
This doesn’t exist because it would be a massive undertaking to redo the special effects of a movie trilogy with a budget of $343 million and a project with a budget of $10 million. Anyone with the means to do something like this would not be wasting their time on a legally grey fan project they could never be paid for.