What are windows/forms missing?

[Vercas]

In my quest to make a nice application for windows, I came to the point of making the windows/forms functionality.

I'd like to hear from everyone what features are windows forms missing.
Example: Minimize to tray.


How about a transparency popup slide bar?

 

[TiconWC3-SC2]

What language is this? I've never seen it. More info please

 

[Vercas]

What language is this? I've never seen it. More info please

WTF? I am just asking the community to tell me a few things that windows are missing, such as the minimize to tray button I have made and the transparency trackbar that I am working on!

If you are curious, I am programming in C#.