Hi! I just made a patch to xfwm4 that changes how Alt+Button3 (easy_click) works; it now resizes in a single dimension (horizontal/vertical) if you're not in the corner of the window. You can find the diff at this URL: http://www.magnesium.net/~thim/tmp/xfwm4-easy_click.diff Thanks!
The patch is now applied to the trunk (HEAD). It should be included in Xfce 4.4. Thanks, Olivier.