I think it will never happen, but wouldn't it be cool if they would play a 'cross' version of a few tracks? Something like a new derangement....not a medley.
Stewart did great stuff with some Police tracks, 'deranging' them for the soundtrack of EVERYONE STARES; I also love the way Sting did his new version of 'Englishman In New York' 'mixed (or deranged) with 'Mad About You (amazing version) on the 'Broken Music' tour.
With all the creativity floating around here, knowing so well the whole Police catalogue, I bet most of you would 'create' a new derangement to be the 'opening act' of a new Police chapter.
Even a few minutes appearance could really leave everybody with an open mouth.....(but I'm sure a single track like 'Roxanne' or 'Message In A Bottle' in their original versions will make everybody more than happy!)
Just my opinion.