I'm wondering you know, think about it, Nelves have been badly beaten up and depleted since WC3 - losing immortality, health, numbers, and it got much worse in WoW too, especially at cataclysm, most of their lands devastated, areas invaded, they hardly had enough to defend if it wasn't for a lucky hero coming they'd have lost everything.
we see them outclassed in azshara, ashenvale, even the return of the highborne and magic was not enough too little too late, as the Shen'drelar are few, and it takes time to train up for combat.
In Legion we see the rest of the night elves decimated: Wardens - only a handful survive, prison ransacked, Dreamers - have lost so much to the nightmare and we see them fleeing into Suramar for refuge, the Moonguard is decimated by the bad nightborne.
At this point, despite victory, they are really really weak, but we see the nightborne uncovered, and we see the night elves gathering together with the good nightborne in a resistance to take Suramar back from the Legion and the bad nightborne who rule the city. The resistance rescues the majority of the nightborne population and remind them that they are heroes, something the presence of the night elves would greatly help too.
Makes me wonder, with so much loss, if this is blizzards answer to the night elves. I noticed many people barely recognize that night elves have magic users in the highborne and that priesthood and senitnesl are not druidic. They only seem to think of night elves in terms of druids, and I wonder if the nightborne are what blizzard use to restore the arcane legacy to the night elf group without necessarily tampering too much with people's druidic view of them. What do you think?
The alliance I know has started to lag behind the horde magically. Dalaran being neutral and more an Azeroth thing.. we have human stormwind mages matched by the forsaken lorderaon ones, and surpassed by the blood elves. Night elves magic dept may be the best and most knowledgeable b/c of the highborne but it's tiny and no match for the forsaken. Nature wise anything the night elves bring is kinda matched by tauren druidically and add to that the shaman strength of orcs, trolls and tauren - I would say the horde leads there too. I think in the light is where the alliance b/c of the Draenei really shine, but are they matched by the forsaken shadow? human paladins are cancelled out by blood elves, most paladins are neutral with Argent Dawn anyway.
I'm afraid without the nightborne the night elves might just disappear. Stretched far too thin. and overwhelmed.