Uh... I don't know what "KZ" means in this context too... but it seems as something that would be good to know to be sure not to offend anyone...
And, regarding the original topic, I would propose the Form Designer be tied to other windows. For example, whenever I click a component in the Palette (the main window) or something in the Object Inspector, it is about something I want to do on the form. So, I'd propose that the Form Designer be connected to those windows, and whenever one clicks them, the Form Designer is also brought forward. That would be an equivalent of docking, which cannot be done with the Designer, but this might be the next closest thing. Also, as in docking itself, which windows would be connected with the Designer should be configurable.