My second character (male - evil) would challenge Lanius after Caesar died (I refused to aide him - he's all against medical tech right? Hypocrite). Since my character was a tank, he'd defeat new Lanius, but wouldn't bother conquering New Vegas - instead he would focus on solidifying his empire out of Flagstaff - and gradually wear down the NCR presence in the Mojave by pure attrition and by making regional allies to help boot them out. He'd be like Conan like Barbarian - after many years his crown would rest on a troubled brow. . . .