Regarding this BIA edition, it's great they finally release a live concert of that tour officially, despite it's one very well known by fans as it was bootleged years ago, but it would be new for many people, so glad for them.
Reading Guy's forum, I'm not sure if they didn't found the full Wembley audio or if they did and the quality wasn't good enough, but the Wembley full audio would had been something new, despite we have more than 90' of it already.
They could had release BIA again without anything so, this is good in the end, but feels a bit sad that they had to found the live material guided by fans that told Guy in his forum where to find it.