Originally Posted by
High Exarch Yrel
No she hasn't. I don't see any major Horde presence in Tanaris, Uldum, Silithus, Ahn'qiraj, Un'goro Crater, Thousand Needles, Feralas, Desolace, Felwood, Hyjal, Winterspring, Moonglade, the Azuremyst Isles, and Teldrassil. In addition, their control over Ashenvale and Darkshore is contested by the Night Elves, as we can see from the War Table missions, who are retaliating hard, and even set up a foothold in Durotar. So much for "Killing hope by delivering a blow that would never heal". I guess that proves that Delaryn was right after all.
Besides, Sylvanas was very naive. The Night Elves did not lose hope when their demigod was murdered in front of their eyes, and their beloved forests were tainted by Archimonde. No, they kept fighting. So what made Sylvanas believe that killing Malfurion and burning Darnassus would crush the Night Elves' hope?
Well, Yeah, Instead of using tactical geniuses and war veterans like Turalyon, Blizzard gives all the power to the 18-yo-old boy and his obnoxious wolf uncle, of course they fell repeatedly for Sylvanas' traps. The writers aren't even trying to make the Alliance act cunningly.
Has she? When? During the Second War? I don't recall her fighting alongside Humans and Dwarves, perhaps you are mistaking her for her older sister Alleria.
She should have prepared for an aerial attack because she knew that the Alliance had the Vindicaar, as well as several gryphon riders, gyrocopters and gunships that they could have used.
So, basically, she has Dazar'alor under her control. Since many areas of Zuldazar are contested between Rastakhan's and Zul's followers, Nazmir is controlled by the Blood Empire, and Vol'dun is contested between the Sethrak and the Vulpera, with no presence whatsoever of the Zandalari Empire.