Tried to level abit in BFA just to get a feel for it as affliction.
Been running with AC/Rush/PS/grimore. Together with sephuz and sacrolash (the headpiece in the inital quests, gives you vampiric speed as 2nd trait (heal and speed buff upon killing something) together with fighter chow .
So basically running circles around mobs with burning rush dotting them up when the die you contiously heal up and get a speed buff. (for sure you could use the bear tartare for more speed bursts , but then you need to drain from time to time to keep your health up)
As mentioned here this works up to 116 so not sure if i will continue as affli or swap to destro , have to get a feel for it before i comment on the later levels.
Abit off topic, has there been any comparisons of the azerite traits done yet?