I would be happy if it just didn't happen again. I could live with having to replay a couple of hours. My last 5 saves are corrupt. All those after finishing fly with me quest. My last save before that quest still loads.
Same here, the assurance that it would not happen again is what I want if I can't get my saves back.
What scares me is the complexity of the game, with so many things going on I'm not sure they're going to be having an easy time finding the root of the issue.
Think about this, the good thing is that this is happening on a wide group of users. As a developer, if I know an issue is not just limited to a single case I know the chances of me running into it, tracking it down and solving it are increased. This is what's on their side. The scary part is this software is so vast and each player can have a completely unique setup (character, inventory, perks, quest progress, reputation level, karma, world altering decisions made) they've got about a billion variables to sift through.
While the frequency of the occurrence is large (as we can see from the forums) the testing/debugging is likely an absolute monster. I do not want to be in their shoes.
Then again, I could be completely off and this could be super simple. Occam's Razor.