Its funny to see this thread because just yesterday I was thinking this same thing! And im sorry if you guys are talking about PVE, but seriously I have not seen a real tank in a level 1-49 PVP match in like 20-30 games. And I know that this is kinda obvious because tanks suck for pvp but I used to see them all the time.
even those playing tank capable classes seem to have removed their taunts from their action bars.
I havent felt a guard as a healer in PUGs in ages, and god forbid anyone taunts or peels.