Originally Posted by
SirCowdog
Correction: Combined might of the Alliance scratching the outer walls of the already ruined city ABOVE the Undercity. The only real tactical advantage taking that castle might have is cutting off access to the teleporter to Silvermoon, which is above ground.
But to be honest, in a world with so many teleporters and portals, laying siege to a city is pretty stupid. There's no way to cut them off from supply. No way to secure your own siege lines and back ranks.
And very likely Anduin and Genn would have both been murdered by Sylvanus, who was right behind Saurfang, with a completely unhindered line of sight to them. While that might not have ended the war then and there, it would have set the Alliance on their heels. I'm still wondering why she didn't shoot him in the face while he was casting the mass-rez. Plot armor, most likely.
As I just said, it was likely an attempt to cut off the head of the snake. But mass-rez was cast and everyone decided to stop fighting while it was going on because of plot armor.
But not only that, a lot of weird stuff is going on in that cinematic. Where are either side's air support? Are they still working on Pathfinder or something? Where is the rest of the horde while the battle at undercity is going on? Why didn't Sylvanus launch Blight barrels into Anduin's densely packed ranks? For that matter, where the hell did Anduin find so many troops to begin with so soon after Legion? As Frumpy said, why didn't someone as sly and clever as Sylvanus abuse the hell out of her superior tactical position?
It was a nice trailer, but so much of it doesn't make any sense from a tactical or strategical point of view.