Although I can't say that about it's sequel, The Riddick Chronicles, I can say that I liked a lot of things about the sequel and am really looking forward to the director's cut that is going to be released this Tuesday.
You see, I'm a fan of both David Twohy [writer and director] and Vin Diesel [star].
Plus I think that the Riddick character has a ton of potential. Twohy and Diesel must think so as well, since they've done two movies about him and have two more potentially in the works.
Personally, I hope that we do get to see the other two Riddick movies. And that they're on par with Pitch Black.