So one thing I've noticed in this 'defeat Zurg' event is that the Star Command medallions count as "items", as in if you have a mission to collect X items in one game, or collect Y items with a certain emoji, or something, you can actually play against those missions and play the Zurg event at the same time. I'm fairly certain that it didn't use to be like that- collecting event things didn't count against item collection missions, unless it was a bingo card event. So that's a welcome change.
This part has been true of Villain Events for over a year, if I recall correctly.