I think it would be a cool idea to add a friend and party system to IF. For example: you can send friend requests to people in the app itself (there should also be an option to mute friend requests for content creators etc.). They can then accept the friend request and then you’ll be added to each others friend list. There you can see all your online friends and what route/aircraft they are flying.
There should also be an option to invite people on your friends list to your party. When 2 players are together in a party they can see each other on the map at all times (even when far away) and they will have a different color on the map. They can communicate via an ingame party chat (party members only).
I think this system would make the already big community that IF has even better since people can now interact with each other a lot easier.