I apologize in advance if this has already been touched upon somewhere, or if Orci has made any comments about it. It occured to me that since Harrison is a such a powerful, Bad-Ass Bad-Guy who's going to have an impact on the Abramsverse, what is his counterpart like in the Prime Universe? This is assuming, of course, that he does exist in the original timeline, and that he wasn't killed before he had a chance to be... Whatever John Harrison is.
But since he appears
to be Starfleet in this reality, I'm guessing he'd most likely be in Starfleet in the Prime. I realize this is a lot like the whole issue with Archer's Enterprise never being mentioned in TOS because of when the show was made, but there's always room for in-universe speculation.