The sad truth people don't realize is Star Wars was always corny campy and made for kids.
The dialogue was always terrible, acting was always bad for the most part, but at the time it came out it was accepted because the world was different, also the visually presentation was leaps and bounds beyond anything that was on film at the time.
The visually effects in the prequels though were new techniques at the time, had no wow factor to the them, so all you had to focus on was the terrible dialogue and bad acting, which was also in the originals.
Unless star wars finds away to revolutionize film making and create a new visual experience for the audience these new movies will be garbage too