You can use "move" in the system menu. Once activated, the arrow keys in the keyboard will move the window outside the desktop window, not sure if you can do it using the mouse somehow.
With XFCE though, I'm quite happy with the level of focus stealing, things that seem to be justifiable are at the right level, like authentication prompts.
Out of interest, what are the things that take focus for you? Maybe we're running totally different sets of programs which might give me an impression that isn't warranted.
I've not noticed focus stealing outside of Steam. What is steam made from, it seems very browserish.
This topic is causing some self-reflection and wonder if I am the peculiar one who does different things and just not bumping into it, I mainly work from xterm, screen, mutt, vim and a lot of time in firefox. Perhaps this combination just doesn't start things that request focus, but when in MS Windows I noticed it a lot.
You're right about steam, but now I'm on a path of wondering...
This topic confirms that focus stealing is a thing in XFCE, I have some research to do!
I am baffled as to how that has been allowed to go on so long. It makes Office a trainwreck usability wise.
The two things that trip me up are that you able to move windows to a position that you can't move them away anymore.
And that apparently maximized windows sometimes leave a 10px gap at the top so that you click on the window behind :-/
In case you hadn't come across it yet, there's a third-party piece of software called AltDrag [0] that lets you do it. It's kind of a must have for me whenever I have to use windows. Yes this should just be builtin
There used to be a 'tile windows' since windows 2.0 or something like that, but it did just that, splatted the windows to take up all the space.
One thing I like about X11 and Windows doesn't do it, is alt-dragging from anywhere in the window, last time I used Windows you couldn't move things around by holding alt and left clicking anywhere, you could only do that from the title bar, which means you can't slide the top of the window off the screen.
The other major thing for me is selection copy, if you highlight text, you can't middle mouse button to paste it, you have to ctrl-c first, which is just more steps.