Jar Jar and midichlorians aren't even that bad compared to Anakin and Padme. The central relationship (well, arguably second to Obi/Ani) is just so bad; I don't know how you can fix the trilogy when its riding on two terrible performances with terrible material to work with terribly directed. It's rotten at the core.
On the flip side if they somehow redid everything involving those two, I think the resulting films, even with everything else intact, would be exponentially better. I can tolerate the cheese- the originals had it after all- and I actually think the high level plot beats are pretty good. Hell, I even like the idea of following the political scene as a major thread- classic Shakespearean stuff and, given that the fall wasn't just Anakin's but a republic's, it makes sense to touch on it. George had something with the whole modern take on a classic tragedy; he just ruined it with the execution.
