I spent the last few hours getting the multi-power system to work with feat/power pairs. The system is really, really cool. It's another huge leap forward by moon_wizard. Unfortunately it did not like my feats on another tab adding powers to the lists. I went cross eyed staring at it for days, until I finally thought up a workaround while shaving this morning.
So what do multi attacks look like? Behold the wonder! (Note moon_wizard did most of the work. The entire system was functional, until he tried to integrate my feat/power pairs. All I did was make feat/power pairs work).