Well, to answer that question.. I'll tell you the two methods I think are possibly going to be implimented for capship IDs. Granted Igiss may be doing a completely different method.
Method 1, Wipe Potentialy 'Needed' for ease on admin duties.
Equipment ID Is added to the game for battleships, and is admin-edited onto each character after applying. This would need a wipe (in *my* opinion) due to the fact that there are several hundred capital ships in the player files and managing all of the existing ships ID's would be a horrendous task for the administration to do all at once. (the second new version goes live everyone and their dog submit a cap ID request because they HAVE a cap)
With a player wipe this would be spread out as people become able to afford their capital ships slowly. Spreading the duties out for the admin staff.
In turn this would also reduce the amount of cap ships as players who don't have sufficient RP, or are users and abusers of cap ships more than likely would not be granted the cap ship ID.
Method 2, no player wipe, no admin interaction.
Method 2 is a rather good one. Using the suggested "capital ship ID" commodity (IE you buy and its in your cargohold and is lost upon death) It would carry a hefty price and be required to be in your cargo hold at all times in space. If you *DONT* have one there should be a SEVERE punishment, (for example, deletion of the ship)
This piece of cargo would need to be lost after a ships destruction or you have the potential of people PVP'ing caps just to claim a Xmil equivalent to a credit card.
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Those are the two methods I can think of that could be implimented, and like I said there is no guarantee that igiss is doing either. He may have another genius plan hidden somewhere.
I hope that gives a bit more insight on why I mentioned player wipes.