Death Knights => The End of the 5-boxed Shaman viability?

[Rin]

The DK team might be the rock to the shaman's scissor team.

But this is not the end of the shaman team. Just because one particular composition of players has a huge advantage over your team does not mean your team is useless.
Your team has a huge advantage over another composition as well.
Most compositions can beat you and can be beaten by you, and it comes down to a combination of player skill, toon gearing and luck.

How does the all DK team compare to the other popular teams in arena?
Because the shaman x4 + healer team is viable against those other compositions. Will the 5x DK fare as well?

Arena is a small portion on the game anyway. Arena is only worthwhile, because they give the best rewards to small scale pvp.
Honestly I have a hundred times as much fun in Battlegrounds as Arena. If you could get equal gear in BG's, even if BG gear is only usable in BG's and Arena gear was only usable in Arena, with both unequipping at the end of the match/bg and neither even equippable in PvE, I'd BG a lot and in that case would never Arena.

You cannot have the best end-game PvE gear with 5 toons, you need 25 for that.
Why does Blizzard give the best PvP gear to those who 5-man PvP?

Ualaa, thank you for your post. I understand where you're coming from. I 10-box, but I only run 4 death knights currently + 1 priest. It seems like in PvP the consensius is that the shaman team will work well, but in PvE, I think the Death Knights have a huge raid type advantage (from a 10-boxer's perspective, given the facts here). I just worry for those who put all their eggs in one basket, if you will with (at this point), what is a heavy investment in a pure shaman team