I feel like we should be able to send and find friends if they are offline. It's been really frustrating to try to send friend requests and then they are like "ya I'm offline currently doing a,b,c." And then I have to remember or search through messages to find there username again whenever I find out they are online.
My point is it's really annoying. Let us send friend requests to offline players and players can just say yes or no when they get back. Or create a friend request tab.