Re: How long before
That's just what is irritating me a little about the response to this. People forget that the films Disney produces don't necessarily include lots of singing and cartoon characters (although you could argue that Star Wars has actually included both anyway, remember Jar Jar, the Ewok Song and that singer in Jabba The Hut's palace).
They also don't necessarily produce kiddie friendly films with cute characters and no gore. Look at the output of Miramax (which was a Disney studio between 1993 and 2010). They produced Pulp Fiction, a lot of Kevin Smith movies and various horror movies, none of which could be called remotely kiddie friendly.
Look at the Marvel films. They had a bit of a shaky start, but have turned into enjoyable action films. They also haven't changed noticeably in style since Disney took over.
Remember, Disney are a business. They are interested in making money with films. While films released under the Disney name have to be at least family friendly (to protect the Disney image), films released under the name of subsidiary studios don't have to be, as long as they make money.
These new Star Wars film probably will be family oriented, but before deciding they will be crap, at least wait until we know more than the fact they are being made.