Screw the 190's and all of that...that just complicates things and makes everything sound far fetched although I do think Republic is up to something and we haven't seen the last of their surprises.
I'll keep my guess simple: That either Compass (as is) or Compass with additional Shuttle America -175's join the ranks as DAL pilots.
It's inevitable that they will be eventually furloughing some of us in the next 24 months. There is no other way around the mess that will occur with all of the flow up/flow down's.
Management might as well bite the bullet now. I don't see much use for Compass as a whipsaw anyway.
Compass was always basically a forced way to get mainline pilots to fly a mainline replacement aircraft for regional rates. They got what they wanted either way.