My roommate just had a thought. What if they expand the talent tree so that class abilities had their own subset of perks to choose from? For warlocks each class could have a perk like arc soul. For solar the hits with the soul would add a little burn. Or for void hits could heal a small portion of health or slow the enemy. The arc soul could chain damage to nearby enemies. Thoughts on how to add some variety to the other class abilities for Hunter or Titan?