I hope you will consider adding floating to the list of features that can be activated under Extras. I'd like to be able to float windows by double-clicking the title bar, rather than a keyboard shortcut.
As an aside, floating is a fantastic feature and I'm really psyched to find someone who has implemented it. There used to be MySIMBL app called Afloat that did this, but it stopped working ages ago and this functionality has been sorely missed. Thank you!