If Duchene can't go I would hope they leave Steel up there with Marchment/Segs to be a placeholder until Duchene is back. Sounds like he's a GTD therefore why put Stank on that line if it's just for the short term. Not to mention Steel doesn't really look out of place with them, and he's earned the ice time.
I'd like to imagine Stank is called up for the long term, hence putting him along side Benn/WJ would make the most sense. WJ needs a real scoring threat on his line to fully break out. He's been carrying that line all year, and he definitely has another level of offense he can hit this year. Stank can possibly unlock that level without WJ having to be moved to the top line again.
Put those three together and let them build chemistry. If it works ... then heck we got another legitimate scoring line. If not, then Dadonov can take his spot back and Stank goes back down.
#justwinbaby