Nothingness: There are some technicalities to that. For example, the player has to choose which recon they disclosed during negotiations. I would not want a program to determine this and show my 'tucked away' recon :)
In any event, whilst the idea is serious, I do not really think that it should be converted to a variant, there are far more worthy suggestions that have been put forward.
The idea was more about understanding the value information and its exchange.
Would you show me your five 1s and I'll show you where one of my 5s is located?
SL-Mark: Would you show me your five 1s and I'll show you where one of my 5s is located?
I wouldn't. First because you know five of my pieces and I would only know one, but also because you know all of one sort: you know all of my 1s, so none of my other pieces can be a 1. I would only know one of your 5's, so I cannot conclude anything about the rest of your pieces.