The ratings will run into trouble when the show gets ahead of the books. At 1 season per book, they can currently run through 2015, 2016 if the 6th book makes it out soon enough. But anyone who thinks the 7th book will be done early enough for them to adapt it into the 7th season for 2017 is just kidding themselves.
It took 11 years for the previous two books to come out, no way the last two get done in 6.
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SuperNiceDog didn't have to reconcile his name...
But Dauntless Hunter is now MrGreenonion