One of the most interesting things about OLR, and a big reason why people like it (IMO), is because of the freedom it provides. It's not top down. It lets everyone kinda do what they want as long as it passes the smell test.
So I would turn your question around on you.
What kind of mission do you want to do?
You can think something up and pitch it. You don't need to wait for anyone else to do it for you.
Well I know it's a very recent development as far as IC goes so you guys might already have something in the works, but with all the recent stuff surrounding And The Word Was, I feel like a really big story opportunity has just been dropped into the Rebellion's lap. So let's do something really big that galvanizes wider Rebellion. We've got plenty of missions and events that are and have been more about building up assets. Stuff like forging ties with the Jedi, and the Mandalorians that have boosted the Rebellion but not as much related to the sparking of rebellion on worlds that would be prone to it (especially in light of recent events) like Corellia or Onderon perhaps. Activities such as those appear lacking in comparison to the more traditional asset building ones.
It also might be helpful to pull down mission packs, like Deceptions on Darknell, that haven't really gotten much interest, and replace them with some fresh ideas, moving any that are in progress to the mission logs.