Arcus skills...controvercy??

Ok, I've made an arcus, and I'm attempting to figure out which skills I want. The heal isn't going to really be all that useful later on, because of how long the casting animation is, she'll get the crap kicked out of her even after I cast it, so I left it at 15, but then there's the fact that the next spell (the casted speed spell) isn't passive. I don't really see any logic in any of the arcus' skills, and I usually end up fighting with my dps, but if anyone has like a level 40+ arcus, what skills did you get after that point, and if you could explain why you chose to and why it is an effective choice. (not required, but preferred)

Thank you for your time to those who respond.

True, but it all depends on how you use the healing skill. If you heal yourself after or before a battle, the animation speed doesn't matter as much. However, in combat as you said, it's not worth it. As for future skills, I don't know much, but it looks like you will eventually have the ability to control monsters and the wind.