Gorn, Mudd, Section 31, Klingons, BB....all reused canon that Abrams used instead of just doing something completely new which would have been nice.
And I think its funny that people are talking about Mudd possibly being the next villain...Mudd was never really a "villain" he was more of an annoying merchant. Sure, in I, Mudd he did some bad things to the crew but he didn't do it as a way to destroy the crew/Enterprise or take out his revenge or whatever. Simply, Mudd is not a villain at all.
Major K
"He guards the sleep of his pauper master as if he were a Prince." George Graham Vest
"We are alone, absolutely alone on this chance planet: and, amid all the forms of life that surround us, not one, excepting the dog, has made an alliance with us." - Maurice Maeterlinck