I can say with some degree of confidence that whilst i can't guarantee what i have said is correct, but i can guarantee that what you have said is not entirely correct either.
VA has never had a CEO, only an executive general manager.
Said EGM is still there, but probably not for long.
777's will not go any time soon. As previously been rumoured, 767's or 330's still being evaluated. Any new wide body likely to be operated by existing experienced widebody crews in the event of redundancy on the 777.
Regardless of any integration 777 pilots will be protected in their current positions, as long as 777's continue to be operated. Any combined seniority, if it ever eventuates, will be an ugly process and who knows how it will resolve itself.
Most likely and least painful outcome would be to have widebody and narrowbody seniority. That way no one is disadvantaged. But that assumes there will continue to be a widebody fleet of some description, which is by no means certain.