A 6 will do. I usually shake of expectation the whole episode and I lost that really soon with this one, but it wasn't bad.
I don't like to compare the series to the books but the Dorne plot just gets worse and worse. Can't believe Ellaria will be leading Sunspear now, I hate the character. And the sand snakes... loved them on the book but they just look lame here.
The other storylines range from decent to good. The ending was shocking, being Mel my favorite character...
The purpose was to remind the audience what happens to the widows of the Khals I guess. Something like that needed to happen, taking her directly to Vaes Dothrak would have been weird. I felt Emilia was skinny btw, her face looks different.