Despite all reports to the contrary, I do strongly believe the Blue Jays are willing to part with D'Arnaud for a reigning Cy Young award winner.
They didn't trade for Reyes, Johnson, Bonifacio and Buck (their FOURTH catcher, mind you) for ish and giggles. They see a severely weakened Red Sox franchise, an aging Yankees team, a Rays team losing multiple pieces (Upton and soon, Shields according to rumors) and a rookie playoff team in Baltimore.
They smell blood in the water and like opportunistic sharks, they're GOING FOR IT. Its not often you have divisional powerhouses floundering all at the same time but its happening now and they're going to try their hardest to make the most of it.
I predict they will eventually trade D'Arnaud if we package a B-prospect along with R.A., like Tapia or Dekker.
BTW, I like your trade proposals but it will take more to pry Choo away from Cleveland - thinking more like Gee Duda.
I'd stay away from the aging Cody, whose warning track power would severely suffer and go after Ludwick (prodigious power) instead.
And rearrange the lineup as such:
1. Tejada SS
2. Choo RF
3. Wright 3B
4. Davis 1B
5. Ludwick LF
6. Murphy 2B
7. D'Arnaud C (until he piles ABs and gets comfortable)
8. Neiwenhuis CF (who I still believe can be a good ML'er)
9. Santana/Harvey/Niese/McHugh/Wheeler