One reason I used wmii instead of the default is because the default stunk. Unity is raising the bar on the default desktop now; I'll definitely give it another look.
I second this. I read some information on Unity and it all sounded so common to me that I thought WMII and the likes actually had an impact on how people making window manager think about window managers.
I'll stick with WMII though as it never gets in my way.
I'll stick with WMII though as it never gets in my way.