Being very (after 35 years) senior, I can truly say that the US system seemed much easier to figure out, and way more flexible. But it gave all the best vacation to the most senior pilots. The AA system at least "shares the wealth" a bit more, but the the system is so arcane it is not to be believed! I wonder how they would feel if Parker foisted our ancient CATCREW system on them.
The float sounds intriguing, and maybe it will be something we love. But until we actually see it in action, I am skeptical. It sounds WAY too vulnerable to management interference, and this management team will take EVERY advantage if there is any in it for them.