So we're nearing the final stretch. We now know most everything about abilities; just a few details elude us still.
In my opinion the skill trees look great. My only criticism is that the spell choices (especially the active spells) are too limited. You're going to have 8/21 available spells on your hotbar. I think it should be more like 8/25. Then you have more significant choices and opportunity cost to consider when building your character. Each class should have one more base skill tree added. Here is my "perfect world" scenario, my suggestions for the added skill trees:
Mage - Earth
Stinging Swarm (not the bees!!!; it can transfer to nearby enemies from the primary target, can be contagious up to 5 times; nature damage over time)
Heroic Aura (use like Barrier so that it affects party members in a targeted area; a combination of all the Enhancement spells from DA:O)
Stone Fist (move this spell from Rift Mage and instead put Crushing Prison in Rift Mage)
Ensnare (move this spell from Rift Mage, if it's actually there, and instead put an Entropic spell like Drain Life or Miasma in Rift Mage)
Warrior - Utility
Throwing Axe (throw a hard-hitting axe at a single target that also stuns for a few seconds)
Flail (basically go berserk with a flail on all enemies within close range; sunders their armor and does massive damage)
Frenzy (activate this and it lasts for 10 seconds; attack 8% faster with each basic attack, stacking)
Cleave (activate this and it lasts for 10 seconds; each basic attack does bonus damage and generates some guard)
Rogue - Bard
Song of Courage (activate this and it lasts for 15 seconds; basically a general party buff; slight increase to damage, crit chance, and stamina/mana regen; 45 second cooldown)
Captivating Song (activate this and it stuns anyone in a 10m range for 3 seconds; when they regain consciousness their threat amounts are reset to 0, which means they'll go to the highest inherent threat, probably the warrior, unless more threat is generated by other characters from this point forward)
Decoy (just like DA2)
Back to Back (just like DA2, except you appear next to the party member closest to you)