http://en.wikipedia.org/wiki/United_States_presidential_line_of_succession#Successions_beyond_Vice_President, he wouldn't be the official President though would he? He only assumed office because the elected President was killed, he is only the Acting President. What I meant is by rebuilding the Line of Succession, he displaces himself, because his claim to Presidency might have been because he was... whatever, but he definately wasn't Richardson's VP, therefore by appointing another VP he, in affect, gives someone the authority to superceed his claim.
Let me just say that this is all very confusing given the information we're having to deal with (Fallout 3), I'm having some trouble wrapping by head around it.
He would be the official President though, (acting President refers to when the President is still alive but incapacitated, for instance, when Lincoln was shot but lingered on for awhile, VP Andrew Johnson became acting President until Lincoln died, which is when he became officially the President).
When Eden took over (and since the President and everybody else was defintely dead) he became the official President and that would only change when his term ended.
What I meant is by rebuilding the Line of Succession, he displaces himself, because his claim to Presidency might have been because he was... whatever, but he definately wasn't Richardson's VP, therefore by appointing another VP he, in affect, gives someone the authority to superceed his claim.
He couldn't really displace himself though, since by COG protcols he is now the President, he wouldn't have to step down if he appointed a VP. Its because the line was broken to him that he becomes the official President. The only way he could be superseceded at this point is if a previously- thought dead member of the line of succession turned out to be alive, then Eden would need to step down and recognize the authority of that individual.