Actually you do get pulled out of Force Camo with damage. Just not DOTS. You get hit with something like a slam you get yanked right out. And the damaged reduction of Force Camo used to be 100% if you spec'd for it, now if you spec for it, you only get 50%.
Mara's aren't broken. Right after 1.2 yea there were a crap load of Mara's running around. But now? At least on my server I hardly ever see more than one or two Mara's in an ops group.