I was able to use the threat of an AC strike to get my company's UA-loving travel agency (OK, UA gives us a discount) to not book me on the UA-AC codeshare, but instead route my entire trip on DL! (The FAQ is on the front-end of a business trip).
And DL promptly upgraded all 6 segments.
Now that I've used the threat for my own selfish purposes, let's hope there is no strike!