Boosts

In the actual systema you get boosts if you have 1 ou 100 friends helping you.

Perhaps that could change and you would have a bar like the one with the medical and training building which would be feed buy your friends in an exponetial way.

For example rest pack

1st with 1 friend gift
2nd with the 3rd friend gift

and so on

also it would be nice a message system do chat with them