Hello!
great response davedontmind!

Yeah, I was thinking it would be a great setup too, but I imagen that you might need a resto one at heroics? even tho it is resto it could do some dps with LB's.
But after seeing Pros and Cons I found out this:

-Takes a lot more time to gear up because they need the same stats and geartype. Imagen the 1x protpala - 1x mage - 1x elemental - 1x boomkin - 1xshadowpriest setup.
Paladin: Plate. Mage, Priest: Cloth. Shaman: Mail. Druid: Leather. But ofc, spelldmg is spelldmg so your shammys could just go all-around with mixed types.
-Good thing about 4x shamans is that its much easier to setup spells and macros. And a lot of nice totembuffs
-4x locks and 1x priest would lack tanking in heroic i guess, but prolly a lot of fun with all those dots

What do you think?

Yours,
Zartox