First of all I would like to ask people not to come here trolling or arguing this is a stupid idea, etc... if you don't agree or like this idea please keep it to your self what i'm intrested is the oppinions of people that support this in some way :P
I remember when i was leveling my shaman up, going to SM and I could be the tank, I could be the healer and still one of the DPSers all at the same time, I was used to playing warlock which only has 1 speccific role so this felt great! Well obviously at a high level it's absurd to do all these simultaneously but well... druids have 4 possible roles so I don't see why shamans can't have the same, there are traces of tanking talents on the enhancement build, Toughness used to award 10% armor and now awards stamina instead, anticipation reduces the chance to dodge and spirit weapons despite reducing our threat, it gives us the ability to parry.
My idea is that with the upcoming expansion some of these talents could be tunned and some could be added and create a viable tanking mechanic and hopefully slightly different from all other existing tanking mechanics. Now here's some examples:
Frost shock causes a high ammount of threat and maybe tweaking elemental weapons or frozen power there could be a mechanic that if your MH was enchanted with frostbrand this would cause the chilled target to shatter and increasing threat on that target, also a spell could be added as a talent, that would award the shaman some sort of defence, this would be required to be kept up all the times with maelstrom weapon procs for example, in terms of defensive habilities like last stand, something could be done with shamanistic rage it would be fun to have a spec working similar to enhancement mostly on very fast cooldowns but both for generating threat and keeping some defences up. Some other defenses or even threat could be generated through a new shield spell, much like Death Knights' bone armor.
There are just some few very ruff ideas but I would love to see some other Ideas anyone else might be intrested in sharing.
Oh, yes... I know this isn't the official wow forum so right now the goal for this post is just some brainstorming if you would like to call it that.
PS: apologies for possible bad wording, I'm having some trouble with my web browser that doesn't allow me to see what I'm typing very clearly...