Spodman
You say you have
few problems with Maaaate's plan of handing out codes to all willy-nilly:
I am not sure how the examples you cite are any different to the hundred and one other ways that aircraft are assigned codes.
I support Maaate's proposal for some very simple reasons already noted:
It's simple
It's cheap (or at not cost)
It's simple
It's safe
It's simple
It adds that little bit extra to safety.
Your example of the track leaping from another aircraft has been (to some extent) resolved by the addition of time based VSPs to the coupling corridor. Also, I think the 'rad-tag' codes are different from those allocated to FDRs, but stand ready to be corrected on that.
As to aircraft crossing a partition, let's say the incidence is 10-20%. In this case, it would be a very simple matter of a transfer of ident. Even if ident is not transfered for all aircraft, it could be done individually on as as-needed basis. (until they sort out 'partitions' - but that would probably cost a lot of French Francs.)
Weasil
a bunch of know it alls
You sweet-talkin' devil you