I was thinking of Nero, and his plot. I guess that maybe I couldn't write a 'summer blockbuster' movie. I gather from sources that he had intended to destroy Vulcan in his time, and didn't let getting tossed back in time 129 years stop him. He waited until Spock showed up (wow, simple miners apparently all have multiple degrees in quantum mechanics, astrophisics, stellar dynamics, and various forms of mathmatics.....I mean they just worked out what happened to them, and then figured out EXACTLY where Spock and the 'amazing Gobstoper of doom' were going to reappear. I'd hate to see what Romulan SCIENTISTS could do!!!), to get the red matter. To avenge his people.
Or, He coulda taken his super ship to Romulus, either seized power or offered his expertise and expanded the Empire to the point where that supernova wouldn't be a threat (you know, make Romulus a gulag and let those Remulans run it).
I guess I'm not a monomaniacal guy!
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"Yes, it's the Apocalypse alright. I always thought I'd have a hand in it"
Professor Farnsworth