Andrew Liptak wrote an interesting article titled "The Real Reason Why Shannara Chronicles Failed to Copy The Success of Game of Thrones" for io9.com. And though I haven't watched the whole season of The Shannara Chronicles, I found myself agreeing with everything Liptak wrote. Here's an extract:
The Shannara Chronicles isn’t really covering the same ground. The epic struggle between good and evil is fairly abstract. And it’s harder to hit that theme with the same weight as with what we’re seeing in other, top-tier shows. Just as A Song of Ice and Fire made older epic fantasy series look a bit simplistic, Game of Thrones makes Shannara look obsolete.
By the end of the season, The Shannara Chronicles simply feels like a missed opportunity—and like a sad cash grab from executives who watched Lord of the Rings and Game of Thrones, and simply wanted to compete by creating their own show. As a result, they pulled all the wrong lessons of the successes of those franchises and came away with something that’s entertaining, but not memorable.