I sort of wish empowerment was more of a buff on yourself that auto empowers any active demons in 80 yards or something (range being a thing on auras though maybe not really a huge deal most of the time I would prefer a big range). Give it a slight graphic if feasible tethering us to the demons, basically the demons feed off OUR power showing that we are summoning demons from the ether but also our own power.
Same thing really about keeping it up all the time but would affect all demons all the time rather than only active on cast and be a bit more fitting for the fantasy in my view. I know in my ways its functionally the same, but in one its a short empowerment on our demons and in what I propose our power is strong enough to just be a continuous battery that just needs the links to stay open. Personal preference on that, if I have a maintenance buff having some cool factor would be nice, still azmodan's guardian of hell ability would also be welcome.
I'd also like it if Demo's supremacy talent had that extra bit of flavour for the spec. As master of demons I wish it gave demo the option of the fel lord as well, given that we can summon it in pvp albeit as a temporary thing, and it would keep the iconic felguard pet of the spec for those that opt for supremacy. Maybe they are holding something like that over for the future, they have said they plan to keep artifacts going through tiers so they may add more summons as the tiers are added and the artefact increases in power.
EDIT: This demo sidetrack has led me to forget this is actually the affliction thread