I'm not sure about this, either. Part of the appeal of
Clerks was how cheaply made it was, and how bad the acting was. Kevin Smith and co. have put in a lot more time in the industry, and it'll probably detract from the college-film-project charm of the original.
Besides, a sequel 12 years after the fact is almost always a sign that it's going to be iffy.
http://imdb.com/title/tt0424345/