Fall of Eagles is brilliant ! I watch it at least every other year [the same with I Claudius].
Tim, I agree with you about the deaths. That episode would debunk all the claimants and their fantasies. But other than that, what else do you think would be relevant in a new treatment of their story ? Perhaps some personal details, ?
And spot on about the locations. Interiors would most likely be done in a studio, as AP, for instance is not like it was when they lived there. Studios are easier anyway and probably less costly. As the Standardt was an important part of their lives, recreating that would be a studio affair I would imagine.
Now, for cost. We are talking about a big budget production here. Any real story about the Romanovs would have to be. Actor's and writer's fees, Production costs,including crews wages. License fees. Sets & locations. The list goes on, does it not ? Costumes and wigs alone would rack up a bundle Travel costs. etc.
Reality sets in I do not see this happening, at least the way I would like it to.
And, this is a limited interest market. The whole world is not all that fascinated by the Romanovs, as many as there are here, the vast majority of viewers have only a vague, if that, knowledge of them.