Yep I would indeed enjoy it. And you're totally right with a tower shield.
Qiang's shield does not look bad but it's too little.
The ToT-shield drops from Boss 8, don't know who this is, and it looks like a wooden/carapace shield. Oh man.
What's up with Blizzard anyway with those shields?
I remember when I first read of the Shield in Dragon Soul: "Blackhorn's mighty bulwark". I thought 'yay, bulwark! must be a big & cool shield!". Damn I was so wrong. Ugly little thing, despite being made of Deathwing's armor or something, it was not cool.
The Shard of Torment did 'never' drop, in Normal nor Heroic. At least it was no little shield. I ran around with the 359 epic boe-shield until the ugly 378 shield in Hour of Twilight. Yes that was indeed an ugly one.
Well my Qiang-shield is tranmogged into Shieldwall of the Breaker from Ulduar10, and I'm happy with it. However, I don't want to keep this transmog in whole 5.2 when the gear is changing to T15 (Warrior).
To the real topic: I agree, and above poster is right, there was an icon for a shield amongst the other...
And as a shield tank, I'd love to have a legendary shield instead of a legendary weapon.
Hopefully we will get a freakin' awesome legendary in the Legion-Addon, yarrrr :-)