The best and most realistic scenario is just to ride it out next season.
Hextall has worked some magic but I don't think there will be a any market for Streit, Schultz, Or Read until closer to the deadline even with salary retained. Hopefully I am wrong.
I would resign Cousins, Schenn, and Gudas. If they could swing a trade for another scoring center (RNH) or top 4 RHD (Trouba) with Simmonds or Schenn as the main piece, I would do it but I don't think that will happen. I don't think they would have the cap to sign a difference making UFA either like Nielsen nor would it be a good idea to tie up cap space long term on a 30+ year old right now.
So send MacDonald back to the AHL and add Provorov. With Del Zotto back and not as terrible of a start they should be a be able to get into the 8th seed next year. Maybe a add a cheap 4th line center on a 1 year contract.
The biggest thing is not to tie up a lot of cap space or roster spots for 2017. The amount of young talent available that year, most with AHL time by then ,will be staggering: Lindblom, NAK, Fazleev, Konecny, Sanheim, Leier, and Morin.