You can answer in spoilers if you want to answer at all: was there any point to the Dorne thing in the books or was it just as random and seemingly wasteful of everyone's time as it was in the series?
The show runners have very explicitly come out today and said that he is dead and will stay dead in just about every article out there.
People need to learn patience. There's no point in watching a show if you're just going to ask the creators for all of the answers ahead of time.
this show...
Hoping that's the end of Dorne in the series.