I think the questions are.....
How many B2's will be needed with all the B1's being trained to remove their exclusions?
Followed by;
How many B1's will be needed when QANTAS open their flood gates to A Licenses?
If I were an AME today, I would be targeting a B1 qualification, followed up immediately with a B2 qualification. If I was already in an Avionic trade stream as an AME, start pursuing both avenues for a qualification.
It will be hard work, but I suggest take a mouthful and chew like buggery.