Superdrag, the Knoxville power pop icons made famous by their 1996 hit “Sucked Out,” have had a couple of brief reunions since their initial breakup in 2003. They played their first show in 12 years in Knoxville in 2022, a small handful of hometown shows since then, and Chicago’s Wicker Park Fest last year. Earlier this year, however, Superdrag announced they’d be …