Well I did have to kill 15 Heroic bosses.
I believe I had more than one, if it makes you feel any better :)
Hmm.. Death knights have to do four dungeons to finish their campaign, whereas rogues/warriors/demon hunters only need to do one dungeon. Nerf!
Interesting... Oh well, if you don't want to run tons of Mythics, normal raids should be your go-to gearing option - we should have normal cleared next week (or so I would expect).
Normal EN should be easy, considering the current Heroic mode should be equivalent to the old Normal mode. From reading reddit, people were complaining about Heroic Nythendra being extremely difficult.