Battlestar Galactica was far from groundbreaking.
I remain amazed by the number of chances the show took in terms of its approaches to faith (or the questioning there of), its handling of grief and loss, and illustrating the effects of war and adversity on not only adults - but children (notably Noah Hathaway's Boxey). The show impressively nailed its thematics of religion vs pragmatism, military vs government, the haves vs the have nots, father vs son, and suggested a far bigger and bolder universe than its first season - and its considerably less visionary follow-up GALACTICA 1980 - had a chance to fully explore.
Thus, I strongly assert that - despite its many shortcomings and frustrating elements - the 'classic' BATTLESTAR GALACTICA never got its due. It never found the innate corporate support of fan traction that so dramatically characterizes STAR TREK, and was roundly overshadowed by Ron Moore's 2004 reinvention of the concept. Yet, somehow, the original series abides.