From a humble PPL:
If no further items are recovered, especially the CVR & FDR, then I suspect that the final report can be little different from the Prelim report. Thus, and this keeps me glued to the thread, one or more of the 'heavyweights' posting here will have posited a scenario close to 100% accurate. We are sharing the same data apart from physical observation of the small amount of wreckage, and the autopsy reports.
Regarding the endless thread concerning 'ligne de vol': I have not read anyone offering the possibility that the pressure hull and main spar, plus remaining attachments, just happened to hit water horizontal and bottom-down, ie. it could have tumbled and rolled from FL300+. The initial wreckage spread would still have been compact, viz Lockerbie.