Think I’m onto something lol, here’s an example:
Your character: Demonic: 50, Ancestral:25, Angelic: 25
Each of those points you could either use to empower item affixes, OR use them in skills for extra effects, for example you might not need 50 demonic with your current gear and can spend 10 demonic points into your most used skill/s for extra debuff power or simply more damage
Heck you might wanna remove angelic altoegether for a while and spend those 25 points into CD reduction or lower cast cost of a certain skill… Think it’s a nice way to introduce “strategy” where you’d either need sacrifice gear affixes for extra skill power or vice versa, use gear as much as you’ve specced into without having “extra left” for empowering of skills
Sounds interesting 
?
Just to clarify: Each level you empower one of the three powers that you can either “assign” to gear usage or empower certain skill/s… Say you gain 3 powers to assign per level, might go 3/0/0 or 2/1/0 for certain hybrid builds
HOWEVER, maybe you don’t need the “excess” (at the moment of leveling up you have enough of your most-specced power already), and instead decide to assign that power to skill (Demonic would increase damage or multicast rate or lower resist or CC mobs, Angelic would increase return mana, reduce mana costs, reduce CD, or even at some spells give you back some shields per hit, ancestral might be doing various things, explode corpses, pierce, multicast, disorient, berserk, summon something, gain X% return life for X seconds… maybe)
However NOT have your powers re-specced completely (meaning if your character is 50/25/25 then you can’t all out of sudden make it that a good defensive skill can have 30 Ancestral points (previously you’ve specced max up to 25 for that route of things)
Meaning ? = you could micro a “soft reset” every now and then combined with gear-power reduction in order to use for empowering certain skills, could be nice thing since you could reset talent trees often as well, BUT you can’t “hard-reset” your actual/total points per route you’ve chosen already… For THAT (and skill level powers) you’d need a hard-reset that would either be super hard to obtain or have like 2 in total when completing the whole campaign (maybe )