The reason why they can't implement these titles outside of Eye of the North is because somebody will figure out how to exploit them to make a billion gold in farming.
Most of the titles in Guild Wars that give bonuses are often limited to their scope on purpose. I.e., Lightbringer only works on demons... and apparently Stone Summit in Slavers' Exile. (You just know that the latter is going to be fixed soon).
The one that has me most concerned is the bonus energy from the Asuran title. If this could be implemented game-wide, the whole Guild Wars game would change completely. Even at Rank 5, you get +10 bonus energy. The title alone gives more energy than a full set of Radiant insignia. At Rank 10, you can have more energy than if you also added two additional Runes of Attunement, which is all you want to add unless you have some crazy build.
That's basically giving everybody a huge, free energy boost for just wearing a title. Then people are just going to slap on other runes and insignia to cover any other weaknesses (like extra armor or health) and the game would collapse pretty quick as everybody starts owning PvE like no tomorrow.
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Don't get me wrong...
I totally agree that PvE should feel more in line with other games. I hate how Guild Wars is the only game where "max level" doesn't really feel all that powerful unless you're in the beginning parts of each chapter, where the monsters are all super-low level and have low armor. Compare this to other games where long-time players are rewarded by making them feel like walking gods.
However, Guild Wars is a pretty fragile game. Having people run amuck with near-infinite energy builds is going to split the game wide open.
From what I can tell, ANet more-or-less quietly approves of grinding for titles and rares as this keeps people interested in the game. In fact, there's heavy evidence that ANet will manipulate the market--such as reducing Icy Dragon Sword drops--once farmers started moving in droves into the area to keep the price and demand high.
I think that what you want will probably show up in Guild Wars 2, where they can start over and hopefully fix a lot of problems with the GW1 model. If ANet didn't approve of such a thing, then I don't see why they are now thinking that a max level of 100 (or even higher) is now going to be the new formula. I can absolutely confirm that many people have quit Guild Wars after realizing that they "maxed out" their characters so early in the game. Most of my friends quit this game for that very reason--PvEers don't care about CHALLENGE, they care about being SUPER POWERFUL. Look at every other RPG ever invented and count how many aren't centered around obtaining a high level or some uber-rare weapon.
C

And you yourself have said to me in the past that what affects you does not affect me, and vice versa, so if someone else has more HP then it does not affect you.