Thing is, very few castertemplates have duration, and Solsikke want to have 20%+ duration, so its kinda hard just changing a "random mage" template. If you're looking at pure nuker ani with 50 arbor, its a whole other deal. But very few mage-templates have 20+% duration and 40+% powerpool which you want on an animist.
On the other hand, you cant have it all. If you want high duration and high powerpool, it tells me you wanna use shrooms. If you do, you can also take a more defensive position, and maybe you then can drop resists from 25%+ to 20%+ maybe? If you can, you can get alot more power/dura in your template compared to someone that want capped resists all the way.