Well no doubt you're about to get flamed to death by the more rabid unionists, but good for you. I am in precisely your position, my application to CX predates this current dispute by several years, so it's difficult to contemplate chucking the opportunity at this late stage because of poor timing beyond my control.
I, too, have observed the many requests for an answer to the question of whether current CX pilots will accept upgrades until the 52 (51 now I think) are reinstated. So far, I haven't seen a single response either way. It would certainly be the ultimate show of solidarity to have pilots refusing upgrade training to avoid taking the positions of their sacked comrades.
Anyway, you covered pretty much exactly the points I was preparing to voice, and I thank you.
Good luck to all involved.