Like random game challenges or a task a player wants to complete to be tracked by Sam, where he can inform you of how far you've progressed and congratulate/inform you of the completion of the task. Maybe with the completion of the task you could even be awarded with some xp.
When playing Siege, I remember having to refresh the stats page to check my progression towards 2 achievements: That Pen Bullet, as well as Camper. If I could ask Sam how many penetration kills I needed to get that achievement, that'd be really cool!
EDIT: Since I don't know how the suggestion transferal is done, I'll make this one in its own post and use the occasion to add a bit more to it.