With a 5x Shaman team, I would recommend Wintergrasp at least twice a week, once on server reset (hard reset of quests) and once four days later (soft reset of quests).

Combine this with 10 arena games a week, purely for the points.

And a ton of battlegrounds, for the honor based gear.

I'm not sure the point where you can do heroics, with 5x Shaman.
Pets get your resilience now, which will be a huge help.
You will have 5x Earth Elementals available.
Fire Elementals have a glyph for much shorter re-use, not sure on the Earth Elementals.

Still, the majority of heroics were based on being a relatively undergeared 80th.
And you can get much better gear now, with enough time gearing up.
And then run (outgear) many of the heroics, which gets you badge gear too.
I don't see a non-tank team doing the newer heroics, but there are many which will be possible.