I'd like to see level 50 versions of lesser items, such as:

Radiant Accurate Rune

Radiant Steadfast Rune

Epic version of: Challenge-of-Rivals

A seal dedicated to hit as the primary stat.

Most of these are alternatives to raiding for hit in pvp, and I think they should be updates regardless. You need some hit to hit the mobs in Ember Isle efficiently because they are 2 levels higher.

More level 50 crafting recipes that help us raid. PVP weapons make Blood-Forged Claymore worthless. Crafted 2-Handers have been left behind for Warriors for ages. I can craft good pvp weapons for every class but my own. And nobody is selling the ID drops to make the 1 handers.

A chance to catch a mount that can swim.
A fish pet that can be summoned when in water.

Stuff.