Visnosky's points aren't all that bad considering he is on such an offensively challenged team. He's on pace for 34 - and if you drafted him expecting that he would repeat his Lidstrom like performance of 3 seasons ago then that was a foolish mistake. He's down slightly for his career average in points and shots but way up on penalties. If your willing to treat your last D spot as a revolving door then maybe it is time to dump him.
As to the top choices; Schnieder's career is on suicide watch - Atlanta is so bad that his stint with the Islanders will seem like the glory years. (I am curious to know how he pissed Burkie off so much to cause him to wipe his ass with Matheu's contract before banishing him to hockey hell)
Liles will probably land just shy of 40 points - but his PPA and +/- are taking a beating, probably not the best choice given that Visnovsky could just as easily get 40 points and not have the baggage of a crappy plus/minus.
Rozival is not near expectations but still on pace for 40. It's a saw off between these two.
That leaves Kuba, who'll probably keep setting em up'. I say take Kuba, who's on pace for twice as many points as Marty St. Louis but he'll probably land around 45-50 points this season (and maybe higher).