The idea of job portabiliy is a good idea but I think the way you have it laid out it a little too extreme to be stomached by the management of any company. You can't force it on a company so it will never work. Especially the hiring of furloughed pilots first in the manner of a recall, only at a different carrier. You essentially set up a communist state of the airlines.

If you dropped all of the requirements to hire and vacation transfers, keeping only the seniority pay portion it might work with an adjustment of pay scales. I still doubt management would go for it though because they would be losing a form of control over the workforce.

Portability of the profession is a nice dream though.