This thread would be more appropriate in DS9. In TNG Worf often just got his butt kicked so show how threatening the bad guy is. Not to mention had a basic difficulty with doors the first few seasons.
There were rumors he'd get his own show, and even some official looking articles, but nothing concrete. I think it's just rumors and just as well. After eleven seasons and four movies, we really have covered Worf's character arc well enough.