WvW is a reward in itself, true. Many players already know this and have put many hours into WvW while representing their server/guild with pride and genuine effort. They deserve retroactive rewards.
Folks who play for loot bragging rights will just have to play catch-up, I suppose. Them’s the breaks! There won’t be any game-breaking mechanics added to WvW, anyway. The in-game benifits of combat vs real, thinking opponents will be minimal. It’s been this way in every MMO that I’ve ever played.