In my opinion, the major benefit of this case is that freedom of speech has been advanced. Other than that, I cannot really think that there are any real benefits. (Of course, protecting a major right is clearly a major benefit.)
One of the major principles of free speech is that even speech that is very offensive must be protected. If we only protect popular speech, we have very little real freedom of speech. When the Court made this particular decision, it helped to illustrate this point. I think this is the major benefit of this decision.
For a similar case, follow what happens as the Court decides what to do about the church that has been holding offensive protests at soldiers' funerals.