I loved it. Thought it was better than frontier or 7 overall.
It peaked early and the ending was rushed way too much, but i felt very satisfied that Freyja's arc followed through all the way to the end and Freyja x Hayate is the best Macross coupling yet.
Delta departs from the usual Macross style i would say, and I am sure this made many fans quite unhappy, but that seems to be the theme of this series: Delta means change and the winds (of Windermere) are changing.