STOP!!!
...ok now that I have your attention lol...
We have heard 2 perspectives on this:
A) That ANET could possibly add more content to keep players/fans happy
and
B) That ANET has your money and thus has no inscentive to add new content.
And before you get all depressed as you lose hope, or angered that you got ripped off, let us look at this objectively for a moment.
Yes, ANET does have your money. Yes, ANET has turned a profit. Yes, they are focusing on GW2.
But don't forget, this is not WoW. As you can no doubt assume, sales of GW:EN are limited to players with a GW campaign, so there is already a cap on the profit that can be acquired from sales that is directly proportional to the number of campaigns out there. What I am saying is that
eventually ANET will stop turning a profit from GW:EN.
We cannot realistically expect GW2 for another 3/2 to 2 years. I think that sales of GW:EN will simmer down by then. Consider the expenses ANET incures daily (wages, utility bills, stationary, communications, etc). Now think of the costs to operate vs the income from GW:EN...
And I think you got the picture...ANET is betting on GW2 sales to cover their intermediary costs!
SO! This means that ANET cannot afford to lose its client base to boredem. In fact to cover their expenses they need an even larger client base than they have now! A bad release of GW2 yielding less profit then they need to cover their prior expenses could put them under. Its a somewhat risky business I think.
What does this mean for us you say? It means that neither A) or B) are fully correct. Instead, I think you can realistically expect ANET to very closely montior the state of GW1, while they devote as much time as they can to GW2, and you can expect that ANET will release some add-on(s) in the future. If there remains serious outcry for new armors I am sure ANET will provide them,
but not right now.
Let me ask you this...what is the sense in adding new armors now? when players/fans will get bored of them in 6 months? From a marketing point of view it makes more sense to release said armors in 6 months to a year to regenerate excitement and interest in the game.
So, really this is about ANET keeping GW1 alive long enough to get GW2 out the door, not about making GW1 super-enjoyable. ANET is striking the balance, between what they would like to do, what fans want, what they can afford to do, and and what they can do. And you can be sure that if GW1 starts to slip, they will redevote their attention to making players happy!
Thats my 2 and 1/2 cents