Very true. The Portuguese example of using a reconstitution (not actors) instead of a reconstruction (using actors) is something we in the UK could learn from. The confrontation when Robert Murat faced his accusers is also unique to Portugal.
The whole point of a reconstitution is to find the liars and identify those who have for some reason or other been less than forthcoming where the true nature of events are concerned. You only need to look at the accidental confrontation when Jane Tanner was intentionally usurped by Gerry McCann when she attempted to show how he got his recollection wrong as to where he and Jez were situated that fateful night. Question is, what else did he get WRONG?
A full reconstitution would reveal the sequence of events on the night Madeleine disappeared. Who was where, when and why. It wouldn't take long for any fabricated timeline to fall apart in such circumstances.
Every single person who was known to have been there that night should have been forced to take part in the reconstitution, anyone failing to do so should have been charged with the Portuguese equivalent of attempting to pervert the course of justice. Had this been done I bet nobody would have refused to take part!
If they had been forced to attend, they couldn't have refused, as you so rightly say, John, but although the McCanns agreed to attend, others that were necessary, to carry out the re-con, did refuse and the whole thing was cancelled by PT.
What is the point of discussing, what could have been or what should have been, when it wasn't and there is nothing more can be done about it, except to do a re-con now.
I should think since it would have been difficult enough back then, to recall all of what happened at the time, it would be near impossible now.