Which of my friends are in the server?

My suggestion is that when you recieve an invite link you should have an option to see which of your friends are in the server without having to join first.

This could be done by showing up to 3 profile picture of friends in the server. If more than 3 it can show 2 then the number of other friends in the server that are not shown otherwise. You could also click on the profile pictures to show a full list of people in the server.