I wasn't totally clear when I said "worst," should've meant compared to meeting my expectations. I think Walker has been rock solid for his role too but he's been about what I expected for the contract we gave him and his past play.
All the other guys have exceeded my expectations so far. Robinson I thought would be an AHLer and he's seamlessly replaced what Noesen provided last year. Roslovic obviously with the goal scoring and speed/forechecking. Ghost I expected to do well like his first short stint here but not quite ppg with 4 goals so far and taking hold of PP1. Carrier has looked amazing as well, although in a lesser role. All of them are outperforming their cap hits, some considerably.
Back to Walker, yes more offense would be nice, and he's taken the most penalties on the team but he has been very solid. I think he's a high end 3rd pair guy getting paid like it. I personally would not be thrilled with him in the top 4, although his skillset in theory would fit very well with Nikishin in the short term. I know some disagree with me but I think Burns will be around quite a bit longer on our top pair, even if not though the solution there isn't Walker or Chatfield and Chatfield basically has 2nd pair RHD locked down so I don't see a path to top 4 for Walker.