Yeah I mean I didn't mean a storyline for the main ride - the announcement very much sounded like a pre-requisite to another storyline for a seperate attraction (Sub-Terra). A new evil CEO, trying to entice people into entering the Phalanx headquarters for a tour of some kind, only to 'unleash' Nemesis on them to kill them.
I dunno, I'm no theme park storyline designer but that's very much the kind of vibe I'm getting from the announcement.