Some of my favorite team-up's I've done in these games fall under the "one and done" style. Wonder Woman and Roy Harper stopping an incident? Cool. Kara-El and Lor-Zod meeting and going their separate ways after some cool interpersonal moments? Perfect. Wonder Woman thrashing Metallo while Superman does crowd control? Super. Iron Man and Captain America having a sparring match before Maria Hill screeches at them? Love it.

These are just a handful of examples. Still go back and read the ones I can.