Hummingbird2 wrote:I've read fanfic and forum threads that seem to insist that he was meant to be first officer, but was passed over in favor of T'Pol.
It was never expressly stated, but there is enough "evidence," if you will, to support that it's implied that he was supposed to be the first officer. T'Pol wasn't originally part of the crew roster. There were no last-minuter roster changes mentioned other than adding her. There was no other first officer who was transferred away or left in a huff or died. Trip is the only other featured character of sufficient rank and experience to have held the job if T'Pol wasn't there. Trip is always in charge when Archer and T'Pol are gone, unless for some reason he's gone, too.
I can't really find anything present in the show that creates an equally strong argument that says he wasn't the first officer before T'Pol showed up. Also, the pilot and, by extension, the first two seasons, are chock full of who-has-what-authority because T'Pol is technically working for the High Command and is on loan to Starfleet. Archer is in command of the ship, but she is supervising the mission so that made her de facto next in charge without "officially" being the first officer.
In essence, what I'm saying is, in the case of this show, being second in command may not necessarily mean you're the first officer, especially when you're taking over under a different chain of authority.