The Dothraki stuff was all kinds of awesome especially since it managed to redeem a storyline that had grown tiresome already. If only they could do likewise with the stuff in Mereen. Everyone seems to agree Tyrion is being a jackass with his 7 year plan, and I can't disagree. He's just going to end up pissing everyone off. Even more.
I'll be really interested to see where the Mereen story line ends up at the end of the season. They've invested a lot of time in to this and it really doesn't seem important or interesting.