The statistics and popularity of Romanian royals are largely irrelevant. As I have said earlier, any restoration requires a really really effectual kingmaker. The public squabble accompanied by odd Facebook posts and machinations was detrimental to the public image. The Romanian royal family's campaign still remains incoherent, whereas the succession line is not viable.
Statistics and numbers is what forms a basis for any movement in any direction. Based on the way the questions are framed, and who has been asked, it can reveal a sentiment or mood, and is quite often used by organizations and even individuals when assessing priorities.
What you mean by
effectual kingmaker I have no idea of, but as has been said many times before, there is no chance of restoring the monarchy in Romania without political support and willingness to carry the question forward, but this is regularly done nowadays, as in the last presidential election, where Victor Ponta, later PM for a short period, vowed to resolve the issue and put it to a referendum if he was elected.
The Romanian Royal Family does not undertake a campaign, and this is probably where some get disappointed, and others confuse the facts. A monarchy is an ancient institution and system of governance where the people in it do not undertake campaigns to elevate themselves, or promote their own positions. The Royal Family, represented by the Crown Princess, has made it clear that the family is at the disposal of the people, in whatever capacity they decide they want them in. After that, they spend their time in Romania representing, opening, visiting and communicating with people, visibly making clear that Romania has a choice and that they are willing to serve. Any 'campaign' to follow, to ensure the monarchy wins a referendum, when called, will not be arranged by the Royal Family themselves, but by sympathetic supporters, institutions and organizations, who will highlight and make clear the strengths of the monarchy as part of educating the public on the issue.
To do anything else from a privileged position of royalty would be unseemly, and something royal families would shy away from.
When it comes to the line of succession, we all agree that there are questions around it, and the unfortunate events surrounding Princess Elenas son Nicholas, have been much debated. He is however still around, and whether or not the question today might seem up in the air, when the time comes for people to make a decision on the future of the monarchy, I would not bet against him being part of that process. Even without him, the proposed line of succession to the Romanian throne has roughly the same number of people in it (6) as the Norwegian (7) or the Swedish (8), and should not be described as 'not viable'. It is however not the final answer if and when the monarchy is restored, as most people will accept, and I think it is still quite clear that Nicholas Medforth-Mills is most likely the future of the monarchy in Romania, after or even instead of his aunt, the Crown Princess.