The nightborne civilizaton is really at the level of grandeur I expected of pre-sundering Elves. They are much closer to what I expected the Shen'drelar highborne but never thought I'd see. Especially after seeing Vashj'ir I have been like aww blizz, when you going to show a pre-sundering Nelven civilization in it's glory? They described it as been amazing, and incredible, the likes heights of which no other civilization or time period on Azeroth has even come close too. Which made me think you mean Darnassus and Silvermoon are not even close? What must this be like. And then they showed this Night elves at the height of the great arcane golden age who instead of giving up magic, for 10k years (or 3k years if you were with Darth'remar) continued to practice it and research and study it. They delivered guys.
I notice a lot of people keep thinking of night elves as primitives because they "go natural", they view them as early caveman, and I sometimes think blizzard shows conflicting viewpoints on this. The narrative is clear that we are in a post apocalyptic world, but sometimes the design seems to paint the ancients as a less advanced version. This is not the case, they were the advanced ones and modern elvendom is still not recovered from that destruction, pales in significance is how Mordant Evenshade remarks of this era. HElves at least trying, Nelves, until Cataclysm just turned their back on all of that, likely in shame and grief, but also fear, believing that by not using magic they could stop the Legion's return, Illidan tried to warn them, prepare them but they locked him up (he did kill a number of Elves in a rage that did not help his case), it wasn't all bad though, it was good of them to focus on the needs of the world rather than the needs of their people, but it left them weaker for it agians the eventual return of the Legion. So when blizzard finally came to the first sign of pre-sundering Elven group, the highborne of Shen'drelar in Eldre'thalas, I was disappointed, I expected much more
Their Cities
The differnece between Suramar and Eldre'thalas is size and power. Suramar was the second largest Elven city behind Zin'Azshari, Capital of it's own region, I think it may have been the first capital before Zin'Azshari because the Main temple of Elune lies there (currently defiled as the legion entry point) where the High Priestess operated from. Tyrande was elevated to her leadership role there - she is from Suramar too btw. It also was able to form the night well. Not to mention the leading cutting edge centre of magical research in the outlying Nar'thalas where even blue dragons would research alongside Elves exploring the mysteries of the universe and the arcane - that is before the elves started getting a bit too cookoo (or at least that's what the quest implies)
Eldre Thalas on the other hand was a university city, where the queen's most cutting edge research was carried out in secret. Think of it as a community of scientist in a small City-like town, all hush hush. Talent from all round hand picked by the Queen to do the sort of wonders that kept her at the top, a secret and very elite magical centre of learning. It was much smaller, so had a lot less people, but the biggest difference was the power source. The shen'drelar used a demon they trapped as a power source, whiles the Shal'dorei had well source. They also rebelled against the Queen, Goldrinn I think fought alongside them at their gates and fell there, but they did repel the legion and survived the Sundering being that far out from the centre.
Development Intentions
Still I don't think blizzard really showed off the highborne much in Cataclysm, the sort of power and majesty displayed by the nightborne is much closer to the sort I was expecting from the Shen'drelar - afterall these were still practicing arcanists of 10k years+ familiar with all the hidden and secret knowledge lost to the Elves. Also classic dire maul quests reveal that the shen'drelar had been scrying on the rest of the world, but kept to themselves. I wonder if they observed the the high elves.. sadly blizzard didn't go into that detail.
Nightborne era are more of the reflection I expected them to be, but hey, that's 2016 engine compared to 2004 for you. And I think they were aiming for it to be more a spooky secret lost city kinda vibe, with dangers -- ( Indiana Jones style possibly) whereas they went for majesty and grandeur and developed image of the past still in glory for Suramar.
Reflections of Night ELves in WoW
Still I do want to see what and how the highborne are reacting to and helping out with the nightborne. I kinda feel blizzard have forgotten they have this group around. Even though I am aware their main function was to allow you to play an arcane wielding night elf, an ancient and powerful wizard. Not all night elves are tree huggers. I think most players get that impression cos the only nice light see them in is a the wonder magical nature capacity. When you see them as warriors and priestess' in their army they are always losing. But warrior, druid and priest - the non-magic wings are not the only ones. Blizzard wanted you to be able to play full competent mage more than capable, role play a night elf that's very much into his arcane and revels in the fullness of that legacy or a new student joining the stream of Elves wanting to learn from these Ancient kin. But the impact of their presence is not shown in a strong light, not one that matches the narrative well enough - I expected a much bigger ripple and showing of capability for their arrival closer to the level of the nightborne rather than weak and muddled.
Why do you think they didn't emphasize them much? Too much of an advantage to the NElves? Or suffered because NElf attention also suffers greatly in wow, at least before Legion anyhow. How do you think they will be reacting to the nightborne?
Role in Legion
Imo, it should have been Mordant Evenshade, the Highborne leader not Khadgar that detects the message for help from the Nightborne. It should have also been Mordant Evenshade who takes you to Azsuna to start questing. I do feel that NElves don't really shine much in Legion either, except for Val'sharah...they're not in the opening Broken Shore scenario with the rest of the alliance races... I can understand that though, given it's the legion and the broken Isles, and Suramar, they should have already been on the scene all over the isles.
But we see nothing of the main night elf group, except in Val'sharah where it's really a druid thing going on, not related to Night Elf involvement or role against the Legion. Further on Tyrande does show up, but again it's in helping her husband concerning the nightmare, an important task but one druid related rather than night elf related, and you accompany her alone, not the Night Elf armies or peoples. You do meet two Highborne mages in Azsuna giving you the a quest chain in Nar'thalas. It's a happy ending for a change
Conclusion
Overall, the silence makes me wonder if they simply forgot them, and didn't write in their involvement. I expected them to be all over Suramar too, but so far, not really. It's interesting that rather than use existing night elves for Suramar, they gave a model upgrade and provided the story of changed night elves. Still, why aren't the highborne the ones leading their people in the assistance of Suramar? Why is it the human mage and not the night elf highborne one? Probably forgotten