I respect all opinions, but intstantly rejeting an idea simply because of the way it looks without looking at the other aspects of it is simply closed minded.
It isn't just Sonic's appearance. It's also the fact that the only things from the Sonic universe that would work is the machines, because the names, the anthropomorphic animals, and the slang don't fit in Star Wars.
Also only one person said Sonic's appearance was the reason.