With the announcement of a potential Ozzfest return and the gloomy splendor of Nine Inch Noize at Coachella, the contemporary festival landscape is fertile ground for dark, heavy music lineups. Sick New World has heeded the call. Though it was canceled last year reportedly due to financial and logistical issues, the day-long alternative and metal-driven gathering came raging back to Las Vegas on Saturday, April 25, showcasing multi-era heavy music — from Nineties giants System of a Down and