The only trouble with that is that the ones who just want a destroyer or bigger ship will wait til they see no one in Alpha slide in buy the thing and slide out. Then you have to do the whole KoS deal and most of those types will not care because it gets them what they want. A fight against smaller ships that they can wipe out with their cap ship.
OR and i have seen this they fly in right in front of any Outcasts present and buy a ship and then either fly it out immediately or are told they have 36 hour to register it (some never do) or argue that they will not register and that there is nothing you can do (by the way they are right). Cap ship registration ONLY works for those who are here for the role playing. The cap whores and pvp whores ignore it and do their own thing. I think registering a cap ship along with a good RP request is a great idea for those who are here to RP but it just does not work for the rest.
