OK, I posted this here: http://www.swtor.com/community/showthread.php?t=88942
too, but in case it's a dead thread, I'm copy pasting:
Holy crap, I am so glad that I found this!
My main is a Jedi Sage, but on all of my Jedi / Sith characters, I had been stacking Willpower. Seemed to make lore sense to me.
In any case, my highest level of these "mistake characters" is a level 20 Marauder. For quest rewards, I usually ignored most of the gear, since it didn't have Willpower! and when drops with WP showed up, I snatched them up.
So, is there any way to fix this? Or should I just delete the character and start over?
Thanks in advance, dudes.