Speaking of Dorian and ElementalFury, I'm actually planning to give him two elemental abilities from the three schools (storm, winter, flame) along with Dispel and Revive. He's going to be my LI, so I'm grooming him to complement my Storm/Necromancer/Barrier + Mind Blast + Revival Inquisitor so he can be a permanent part of my "goto" team. He's the only character I'm planning to pick and choose talents from multiple trees (as opposed to focusing on a select 2-3), and unless there's something in Necromancy I can't live without, I probably won't even touch his specialization since I'll have it myself.
I've been thinking of making our 3 Mage companions tailored to a specific elemental style while slightly dabbing into the other trees. All of them, however, will be pro-efficient in the Spirit tree.
So basically what I mean is this:
1) Vivienne is our ice queen. However, she is also a saucey minx. She will be focusing more on traditional Mage spells instead of her Knight Enchanter specialization.
Heavy investments in;
-Spirit (Barrier, Dispel, Revive)
-Winter (Winter's Grasp, Ice Mine, Wall of Ice)
-Inferno (Flashfire, Fire Mine, Wall of Fire)
Very minor investments in the Storm and Knight Enchanter trees
-Knight Enchanter (Fade Cloak, Resurgence)
-Storm (Energy Barrage)
2) Dorian has a revitalizing personalty and smoldering good looks. Beauty is in the eye of the beholder, but his talents certainly support his claims. Aside from being proefficient in Spirit and Elemental trees, Dorian will also heavily focus on his unique abilities to use dark magic.
Heavy investments in;
-Spirit (Barrier, Dispel, Revive)
-Necromancer (????)
-Inferno (Flashfire, Fire Mine, Wall of Fire)
Very minor investments in Winter and Storm
-Winter (Winter's Grasp, Ice Mine)
-Storm (Energy Barrage)
3) Solas can be as mysterious and unpredictable as the forces of nature. Like so, he specializes in Storm spells that spawn from the energies of the skies, as well as supportive energies as pure as nature itself. Solas holds unbelievable power and force through his many years of Fade exploration/education.
Heavy investments in;
-Spirit (Barrier, Dispel, Revive)
-Storm (Energy Barrage, Shock, Chain Lightning Static Cage)
-Rift Mage (Stone's Fist, Fire Storm, ???)
Minor investments in;
-Inferno (Flashfire, Fire Mine)
-Winter (Winter's Grasp, Ice Mine)
Basically this is my plan for Mage companions. All of them are heavily invested in Spirit, that is definite. Solas and Dorian are both heavily invested in their specializations while Vivienne isn't too invested in hers. Solas' elemental focus of Storm, Dorian's elemental focus is Inferno, Vivienne's elemental focus is BOTH Inferno and Winter (on account of her not investing much into her specialization)