A new feature/idea/suggestion

You could add a feature like :
When you join a server it can show who in your friends list is a part of this server or it could be a option to check that at least rather than wasting time seeing if your friend is a part of the server.

Also another idea : 

The search features are indeed very useful but it could be made better by adding something like "has role:" to the search bar. So when you search something it shows messages from a person having a certain role. 
An "ignore:" command could also be added to filter the search but maybe that's not so useful.

Thats all I had to say :)