It was a decision taken by the team,back when I was a member.
To be honest,at the outset ,we got fed up of the lethargy from the forum/user community when asking for guidance and concensus of opinion.
To move the whole project forward, decisions had to be taken, which may not ultimately be to the liking of every individual!
If people want to display things differently, then that's their choice,but I don't think it's hard to understand why the choice was made - after all,we're talking about a handful of enthusiasts here, dealing with what at the time was a gargantuan problem.
At the time,this was a sensible decision to take given the more obvious issues that needed to be dealt with
What are we gaining by not using TACTICAL, when we know that the hex code is passed around between airframes on a frequent basis??
If we don't know the identity,we don't know the identity - simple!
Displaying the hex code in this field,only serves to duplicate the info on the screen, and given that it's the registration that governs selection of pictures to the majority of users, we're gaining little?