Shannara was candy, not unlike the Arrowverse shows. for me. I watch it on my elliptical and not as part of my primetime viewing with my wife.
Season 1 was on MTV and had a little bit of the CW/Twilight crowd feel, but it never really overshadowed the story line. Even a love triangle story was very secondary. Season 2 moved to Spike, the show got twice as violent/bloody and was actually kind of fun for that reason. I don’t think it’s going to see a season 3.