That is, when you create D, you can link D to A, B, or C, but not A and B. This grants bonus AP to A,B, or C. Likewise, if you rebirth A, you can link A to another character (I have not rebirthed with a Hero talent since, so this is an assumption).
Flagship was one of the first of the traditional merchant account providers to offer free account setup, with no application or account setup fees being charged. The company was also among the first to offer true month-to-month contracts, with no early termination fees for closing your account.
One hub that is big in consulting that is not big in finance is DC. Mainly civil, government, military work. You have McK and Booz of course, but also Deloitte, and the specialized players like Lockheed, SAIC, SA, etc. I can say that the government is a great customer to have, at this point in the economic cycle.