Rantanen wouldn't be a miracle worker, but he could be a spark may be all the team needs. People have short term memories when it comes to sports and it's hard to remember when they are playing this poorly that not long ago, they were playing pretty well. But there's every possibility they can play well again.
When Zadorov and Bigras were up, I don't think you can make a great argument that the 1.0 GAA was because they are both stout, shut down defensemen. But you can probably attribute it to an intangible chemistry or dynamic the team had with them. There could be a similar affect with Rantanen in the lineup and Roy and Sakic need to turn over this stone before they try anything else (I'm pretty sure Roy has more or less tried every stone available from the present active roster).
I liked that last line, I loled, Roy really has gone above and beyond trying everything except bringing up Mikko or actually giving Grigorenko a couple of full games on that top line. Even going back to what he did before chasing his tail.