True, the company can't truly complete the merger along all work groups if they don't have JCBA with each but I'm sure the company understands and cost out collateral damage or friendly fire as well in managing non JCBA assessments.
The way I see it, the company wanted and needed the cross utilization to go both ways, not to protect LAA and LUS at each station, but to pick and choose which one it wanted or needs to protect at each station, due to metal. So, imo, it will protect whichever group is more cost advantage for them and offers management the least amount of employees protected. Applying that to MIA, it most definitely means that none of you will be protected or be able to have LUS do your metal. Your scenario is going to be accurate in your opinion about some supervisor coming by asking a LUS guy to push a plane out. That's not authorized cross utilization unless there is a letter on file, so you will have to grieve that. I'm sure NYer will be on top of that as well as our Local Chairman on the LUS side there in MIA who is very good.
LGA, who knows. But I'm sure the company will pick and choose which group, based on aircraft movement. So I don't think your LGA argument is a 'lock'. One group will be protected, one will not. It's anyone's guess which group gets the "Lucky Dog" there or BOS.
It will be interesting but I think the company is willing to accept collateral damage of not having a JCBA unless it is extremely cost effective for them. Other mergers delayed JCBA for certain groups as well. That said, my main concern now, from a LUS perspective, is what will compel us to negotiate unless we get a helluva lot of things that makes it cost positive. I mean, why would LUS negotiators rush or even bother unless we got some real big stuff?