As usual, one poster hogs the input with superfluous postings, however, a bit of effort, I can now respond.
Yes, Pavlov, a series would be fantastic. It is true Massies began with Alexei- his own son has hemophilia so that is what got him started to begin with.
A series by BBC or perhaps ITV would be brilliant, they are so good at historical dramas and have a great pool of actors & art direction. As for locations...again, expense and not all of the locations are amenable to production. Exterior scenes, maybe. But interiors, well, that might be a problem, as most are open to the public and not at all like they were in the days of N&A. The studios, especially the British are excellent at recreating interiors.
Costume dramas are quite costly, especially to make them believable. The BBC relies on license fees and ITV on commercial income, so it just depends on how much they have to spend on such projects. I have read prospects of such projects, unfortunately, cost is the driving factor. There is a huge pool of talent and plenty willing and able- but, money....
Well, one can dream, can't one?