When you made Champions Online (I know, I know, different dev team but you probably learned things), the game got a lot of negative feedback for the grouping aspect, simply because the dynamics of grouping in that game used to bind a group together, take it apart, then you need to find a new one, and it falls apart because some missions needed a group, some were pure solo missions where teammates could enter but got nothing out of it. This was fixed with shareable citizen missions and shareable ''secondary'' missions and we enjoyed the fix.
Now with this game, you did something similar it seems - but almost more annoying. There are missions where grouping is awesome, and missions where groups are split up (read: Enemy contacts!). This is really REALLY annoying! I'm sorry, I can't put it any nicer. If you mostly play in a group it will set you in a ****y mood to suddenly find yourselves in different instances to perform a mission which is hardly among your best, and rather repetitive.
Before, the same was true for the exploration ''anomalies'' you could enter for some missions, then, this GLORIOUS box of ''*teamname's instance* popped up and you could enter your teammates mission and the problem was solved. Tada. You have the system in place. Now add it to the enemy contacts please. Trust me, people would be grateful.