Regarding the issue about keeping the guys on and reclaiming from Boeing - cash flow may be an issue, given that Boeing are hiring a very expensive team of defense lawyers (from the other thread) it may be a long time before any compensation is paid - if at all. But if cash flow turns negative airlines lives are measure in weeks. Doesn't make it right, business is harsh.
When, and not if, the MAX flies again I am sure there will be a rebranding, MAX is too catchy a name. Had it been the 737-1100 or something similar it would have been forgotten. I suspect MAX has now entered the consciousness of the flying masses. Indeed, it doesn't help that Max is often associated with Mad thanks to a certain film and that's how I see it referred to on some travel/leisure forums. Something anodyne will be the order of the day.