Oh, they're probably preparing Element Lad to be the overarching villain of Season 3.
Seriously, though ...
It was a decent, compact story. I always love "here comes the cavalry" scenes, and BB and LL ramming Starro with the ship was a pretty good climax. The art was all right -- I liked the splash page of Jordana smashing through the cruiser's hull.
But there was something missing in this issue -- I can't place my finger on it. Whatever the Infectious Lass and Brainy on Colu issues had, I want more of it, and less of this. Maybe the J. Torres' stories don't grab me as much as those written by other creators. He doesn't capture the voices of the characters or the tone of the cartoon very well, imo -- it's like reading about a different Legion than the one on TV.