That was awesome although I personally prefer Season 1's OP/ED theme songs.
And did Migi and his crew invade this show?! Just kidding. The action was good and the buildup towards the end of Tsugumi greeting the others in space was thrilling. I also like how they did some of comedy and reintroduction of the characters.
I wonder how Nagate will respond to Tsugumi though....but so far, this season has all my attention.