the current release of keyclone allows for mouse click passing... and it works with things like paint. but... it doesn't work with wow... for the simple fact that wow needs to be in focus to allow processing of mouse messages. i believe it works on separate machines, but i haven't tried that in a while.

as an fyi.. the upcoming release of keyclone does have focus-follow-mouse functionality... so if you are running a 2x2 grid, you can just click on the spot within each window to target (currently, you would need to click twice). it's not 100%, but it's fairly close. i'll release the next version once i'm happy with the maximizer layout update