In the end, it is always up to you on how you want to design your Interface. Some people like to play with the standard WoW UI, others like to have their action bars hidden and have weak auras in the middle of their screen. As I said, you as a player need to feel comfortable with your UI.
General recommendations I always give in regards to building a UI are:
- Have your player and target frame somewhere in the middle of your screen; the same goes for resource bars and boss mods.
- The damage meter can go somewhere in the corner or side of the screen and should be made small. Otherwise, that can distract you too much.
The most helpful addons are WeakAuras, Plater, Details and BigWigs/DeadlyBossMods. All of those are highly customizable and will help you a lot.
Netherwalk cancel macro:
Felblade/Demon’s Bite macro:
/cast [talent:1/3] Felblade
/cast Demon's Bite
Metamorphosis on player macro:
/cast [@player] Metamorphosis
Metamorphosis on cursor macro:
/cast [@cursor] Metamorphosis
Throw Glaive mouseover macro
A good macro for if you want to apply Chaos Brand to a faraway enemy:
/cast [@mouseover,harm,nodead]Throw Glaive
Two very good packs for Havoc Demonhunter, containing several different auras that change depending on your character's setup.
If you want to take some inspiration from the UI linked above you can use the following links: