One of the things I so admired about the rebuilding of Pavlovsk after WWII was that it was returned as nearly as possible to its original state. For instance, after the 1803 fire the wood mosaic floors had been replaced with simpler designs, even though the reconstruction was handled by Voronikhin, the original architect. But the current restoration reverted to the original floor designs that had already passed out of fashion by 1803.
But Pavlovsk is, perhaps, a different situation, as its significance lies more clearly at the artistic end of the spectrum than the historical. I have to acknowledge that the significance of the Alexander Palace as the last home and the house prison of the ruling family puts it more at the historical end of spectrum.
Many -- perhaps most -- of the posters on this forum are primarily occupied with the Nicholas and Alexandra saga. I tend to think more in terms of the long heritage of Romanov rule and am more attracted to the artifacts of its glories.
Be that as it may, I think one argument for restoring the Alexander Palace to the state in which Nicholas and Alexandra knew it is to illustrate the point of how monarchy was evolving in the latter half of the 19th century.
Some writers have observed that Empress Elizabeth was the last of the truly Russian rulers -- people of outsized appetites and outrageous displays of wealth whom their subjects truly loved for it. After her began the slow "Germanization" of the Russian royal house (and, indeed, of other European dynasties), by which is meant the increasing drift toward more bourgeoise values and modes of living.
When I look at the interiors of the Alexander Palace living quarters at the time of the revolution -- the iron camp beds, the pillows that could have come from any variety store, the store-bought furniture, the natty pole lamps, the girls' "double-bunking" -- I'm brought to the realization of just how much longing for a "normal" life had overcome a family that, as rulers of Russia, had no hope of ever experiencing true normalcy. Indeed, it was the pursuit of that normalcy, with its attendant privacy and freedom from monstrous responsibility, that, at least in part, undid the Romanov dynasty.
Maybe that poignant -- and ultimately futile -- longing is worth preserving, after all.