I don't think Daniel looks terrible out there, but he does look like he's reluctant to shoot because he's struggling so much. Kesler is an issue right now though. He's become a one-dimensional player again who simply isn't creative enough with the puck.
Moving forward after this season, I think Gillis has to assume that Kesler isn't a play driver anymore and needs another play on his line to drive the play. Someone like Ryan O'Reilly would be ideal.
Burrows is also just... woof. What a year for him. That contract looks a lot riskier than the Sedins' does at this point.
Edit: Daniel is often getting into the zone with the puck and having nobody in support once he does so. It's hard to watch the Canucks top line right now. It's just not a good fit.