I liked Ishiya and Old Lucy sacrificing themselves. Now let's see if they'll actually stay dead.
The rest was mediocre. Acnologia's defeat was underwhelming (though the sacrifice helped a bit). The reactions were almost humorous. I feel we've seen this scenario before.
And Zeref… even for Fairy Tail that was awful. I'm not demanding a top-notch fight, but Fairy Tail has never been "bad" as much as it's "mediocre". Usually all the key ingredients are there, but the lack of build up and emotional investment for the readers is what ruins it. Acnologia's defeat is an example, at least it had some scale to it and the sacrifice to hype it a little. This was plain bad.
It feels like there's still one fight left for this series so maybe it'll get "better", but after this my hopes aren't high.