While I agree that single days off suck, what are you willing to give up for that to go away? They won't cave on that without getting something for it. Also, until there's a full seven day a week schedule in every base, it probably won't ever go away.

I would wait til the TA is released. Early information tends to be wrong a lot of the time.

And if you don't like the TA, volunteer for the negotiating committee if you think you can do better. From what I've been told, I think you'll find it an educational experience.