Im currently playing arena in a 2vs2 with a frost mage @1650ish rating(its quite hard to overcome the rogue infested low bracket), but every other combination of classes isnt a very big problem. A enhancement shaman friend of mine is at the moment 1945 rated in 2vs2 so its quite possible to reach 2k'ish rating with this combination. We both follow the same socket philosphy sta/crit/ap. We are doing arena with 11,3k hp and 390 resilince unbuffed without a shield at about 30,88 crit.
I am also playing 3vs3 with warri/pala at 1927 rating sometimes swapping me vs a resto shaman for some dual healer action.
5on5 im playing with Warri/ Felguard/Destro Lock/Druid/Paladin currently at 2047 rating (Shoulders inc).
In every bracket I start the match with 1 hand+Shield, in 3vs3 and 5vs5 I also stay a bit behind my team so they have to go through my whole team to reach me if they want to focus me.
Some macros I found useful when doing arena
#showtooltip Shamanistic Rage(Rank 1)
/use [nomodifier] Bloodlust Brooch;(for pve)
/stopcasting
/cast [nomodifier] Shamanistic Rage;
/use [modifier:alt] Medallion of the Alliance;
/use [modifier:ctrl] 14 (thats the lower trinket slot i usually have battlemaster in there)
#showtooltip [nomodifier:alt] Earth Shock(Rank 8)
#showtooltip [modifier:alt] Earth Shock(Rank 1)
/cast [nomodifier:alt] Earth Shock(Rank 8)
/cast [modifier:alt,target=focus] Earth Shock(Rank 1)
with alt+key shocks ur focus target with a Rank 1 Earthshock
#show Purge
/cast [nomodifier,target=mouseover,harm,nodead,exists] [modifier:alt,target=focus,harm,nodead,exists] [nomodifier,target=target,harm,nodead,exists] [nomodifier,target=target,harm,nodead,exists] [nomodifier,target=targettarget,harm] Purge
Purges your mouseover target, then your target, if your target is friendly the target of your target and with alt your focus target
/focus [nomodifier,target=mouseover,exists]; focus [nomodifier,target=target]
/clearfocus [modifier:alt]
Your mouseover target or target as a focus target, alt clears the selection
/stopmacro [target=focus,noexists] [noexists]
/target focus
/targetlasttarget
/focus target
/targetlasttarget
Makes your focus target your target and your target the focus target
/equipslot 16 Vengeful Gladiator's Cleaver (insert mh weapon name here)
/equipslot 17 Vengeful Gladiator's Chopper (insert oh weapon name here)
/equipslot 17 Merciless Gladiator's Shield Wall (insert shield here)
swaps from dw to shield and back with just 1 button press
If you want to check the armory profiles:
The World of Warcraft Armory
The World of Warcraft Armory