Do you have data that shows Bosch is footing a large part of the cost? I don't necessarily doubt it but statements without fact are opinions.
I would guess they would just replace the timing cover with the updated design, and swap to the CP3. According to a quick google it looks like it's 2.4 hours (on a 2010) to replace the timing cover. That's obviously a decent amount of extra work for every vehicle, but it must pale in comparison to the AC TSB that requires taking apart the whole dash. (which I also need to get done)
Time will tell and I'm keeping my fingers crossed that as much as we want it done right, FCA also wants to just put this behind them, get the "win" and move on.
They're going to be in mine anyway (eventually) to fix an oil leak, so while I'm pessimistic overall given the (IMHO) ambiguity of the recall verbiage, I'm trying to be optimistic about this as a final solution.
It IS possible to hold two thoughts.