Forums Feature Suggestions Tree style window list

I think it would be nice to have an option tree style window list rather than just buttons that you could have on the left or right side of the parent MDI window rather than only having a plain old button list.

You could have something like this:

+ server.blah.net
|-- #chan1
|-- #chan4
|
|-+ Queries
| |-- Nick2
| |-- Nick9
|
|-+ @Server specific custom window

+ server.foobar.net
|-- #chan7
|
|-+ Queries
| |-- Nick15

+ DCCs
|-- Nick34 File - foobar.rar - 39%
|-- Nick32 Chat

and so on. I think it would be really nice to have built into mIRC.. and server specific custom windows would be nice too.