The only sub-plots that I can think of that are still hanging out there is Mysa/Mordru, the return of Karate Kid, and Brainy's obsession with cockroaches.

A few more with the mystery/background of Professor Li and the introduction and build up of Glorith in the Academy and now Legion proper.
My main criticism of the series, as been the lack of subplots, romantic entanglements, close friendships, and other little tidbits, that made Levitz previous run of Legion so memorable, has been only mediocre in the current run.

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