Drop down lists of users grouped by server's ranks

Hello.

I find searching for specific group of users or user in server's users list to be difficult. 
What about adding an option to collapsing the list of users of a given rank. 
I am on the server of programmers where they are grouped by their main programming language. If I would find users of for example that are interested in C# I have to scroll all users of C++ that are above and there are a lot of them!
I think that this would take a little time and would help everyone a lot!

Greetings.
John.