I'm generaly not in favour of remaking movies. The only reasons to do so would be if the movie had great potential in terms of ideas and/or script, but the finished product is hampered by bad directing or acting or otherwise.
I suppose I'd like to see those new Star wars movies redone, to make them more in line with the old movies and, well, not suck. That would of course require throwing out absolutely everything those movies did - including the script - and keep George Lucas from touching the project. It is also, of course, not going to happen.