Klingons are a huge part of Trek, so using them more is to be expected. I enjoyed what we saw of them in the last movie.
But, Klingons have been used so much thru out so many movies and episodes, I'm just not sure there's a new story left to tell with them. I don't know what JJ could do with Klingons that hasn't already been done.
Klingons will most likely be in future nuTrek movies, but unless JJ decides to make them big Gilbert and Sullivan fans, they will not be any different than the Klingons we have seen throughout Trek.