Because she's full of issues.
She's not a perfect girl as we've seen. She's been wrote as being racist towards Blood Elves and I loved it!
She is uncaring, ruthless and brings a side to the Night elves that no other race has.
No other elf race has the Wardens. Blood Elves have Farstriders, Nightborne have Nighthunters - neither have a specific and ferocious group like the Night Elven Wardens.
Sylavans' judgement - it was only Maiev that looked the most intimidating because she had her full armor on and you couldn't see her face. Just her owl-crested Helmet, looking at the Banshee as she walked towards her judgement.
Maiev Shadowsong and the Wardens in general, will always be my 3rd favorite character.
And you don't seemingly want me to be a night elf fan because I like a night elf you don't?
How about this - I stick to what I like and you stick to what you like.
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It's just my opinion - hence why I said "seem to carry." I didn't say, "it doesn't."
Plus, a lot of Highborne were aware of what was going on in Zin-Azshari, but yet - their were many who Azshara didn't tell.
Indeed, with the Shen'dralar not showing any signs of corruption towards fel magic, they could have been the ones (in that regard), who could have easily summoned more of the demons and potentially brought Sargeras into the world. They all could have refused Xavius' offer because they were Azshara's only Highborne who could control fel magic to the extent. Not even Illidan, his Demon Hunters, the Blood Elves or the Nightborne could hide their fel usage.
But that's only going off what we know about one of their feat of canon strengths - no visible signs of fel corruption. I am just speculating because we honestly don't know because they weren't there.
The Shandaral Highborne - again, we don't know anything about them until after the Sundering when they were killed by the Blue Dragons.