Practical
I was under the impression that, on the whole, you guys worked pretty efficiently in term of unitising the annual hours limits so, other than the company thinking they can squeeze a bit more out of you, can't see any reason for change.
I think it is always down to the company wanting a bit more, which is leading to a managed decline - something prospective joiners need to be aware of.
The lack of a "no change" option post negotiations has become fairly standard. I think many on the BACC are still scarred by the Open Skies episode ( having heard what went on at a personal level I think that is quite understandable), they saw what went on around the Cabin crew dispute, and have decided any move towards IA is best avoided. Therefore following any negotiations we tend to see a couple of options being offered up, one of which is usually recommended by the BACC. In the heated debate that then follows elsewhere we then normally get told that not voting for the BACC's recommended option will result in them (or many of them) resigning.
That's my read of it and all IMVHO of course.