Surprising Death in "Sons of the Harpy"

This weeks episode of Game of Thrones, "Sons of the Harpy", saw a shocking death of a major character from the hands of the Harpy.  The scene ended in almost an ambiguous sense, but in a recent interview with Entertainment Weekly - and if you watched the preview for next weeks episode - it is confirmed that the character is in fact dead.  

If you have not seen the latest episode, "Sons of the Harpy", stop reading now.  Spoilers are ahead.  

Only four episode into season 5 and already two characters have died in the show that are still alive in the books.  After coming to the rescue of Grey Worm, and the other Unsullied, Ser Barristan ultimately goes out fighting.  The death of Ser Barristan Selmy was definitely surprising - although I expected him to die this season, I didn't expect him to go out like this. 

In an interview with Entertainment Weekly, Ian McElhinney was asked what he would say to books readers who are upset about the death of Ser Barristan - and I think his answer could be used to explain any change from the books:

I'm disappointed.  But I think you have to accept - as I have accepted - that the demands of TV are different than the demand of book writing.  With TV there's a pressure to create a number of high points.  One of the big things about this series - it's true in the books and even more true in the series - is the surprise element, the shocks.  They've got to keep that up because people expect that.  You can't predict anything but what you can predict is that there will be surprises.  

It'll be interesting to see the effects Ser Barristan's death will have on Dany, and the Meereen story line.  Since he has been one of Dany's closest advisers and friends.  I expect this to be the turning point in Dany's story, where she starts to become more ruthless in rulings against the Sons of the Harpy.  

Let me know in the comments what you thought about the death of Ser Barristan Selmy.  And what do you think this will mean for the future of Dany?