Just some feedback about why I personally never went beyond dabbling in pvp over the 4 years I've been playing.
One of the main reasons for my limited participation in serious pvp is that I'm not interested in leaving the guild of good friends I've made to join a more pvp focused guild. I realize everyone's guild experiences aren't the same, but mine is a bit like an extended family. We interact outside of gw both online and in real life. We're fairly casual, and mostly all working adults with families and such, and we spend our time on GW relaxing and laughing and otherwise winding down from the stresses from our day jobs. GW isn't a second job for us, it's a game.
The way the game is currently set up, we're limited in setting up networks to achieve our individual goals. We have our guilds, our alliance (guild extension) and our friends list. Let's compare this to real life, just for the sake of expounding theories and brainstorming and exploring common themes and all that shit. I have my family, my wife's family, my friends, my wife's friends, friends of friends, my work colleagues (both coworkers and contract workers, etc), my wife's colleagues, the professional orginizations I belong to, other social groups I particpate in, etc, etc, the list goes on. Now some individuals fall into multiple categories, some are limited to a single category. I'll typically rely on a particular group for a specific utility. Sometimes I can get people from other groups to perform in a capacity I wouldn't have originally associated them within. This is how we get shit done irl.
I guess the bottom line is, there are a lot more networking opportunities available to us irl (lol, durrr

) and given the limitations in-game with networking, a lot of opportunities for socializing with people with common objectives are missed. It'd be nice if, in-game, I'd be allowed to have my guild, my colleagues, and my other associations and clubs that I could take part in based on my own particular interests. An in-game provision to set up sub-groups for the sake of expanding our networks I think would go a long way towards building communities and breaking down the walls that are currently inhibiting our ability to socialize normally/properly.
I realize that the long view here could result in an apocalyptic transformation of this game into a mutant facebook of some sort. However, I think that given this game is a MMO of sorts, where people are actually socializing online, by giving the people more and better opportunities to interact and make friends and ultimately have fun and buy more copies of the game, this aspect is worth consideration. The goal here would be to explore avenues to bring people with different playstyles and gaming interests together, not drive them further apart.
I'm not suggesting that this alone is the magic bullet. I agree with the sentiments presented about having a more approachable middle tier of pvp, bridging the gap between pve and high end pvp. My fear is that this world pvp would quickly be relegated to the non-serious low end pvp spectrum, and the cycle will repeat itself. From my own speculations as to how it will work, I think it sounds fun, if it is how I am imagining it is going to be. Regardless of what Anet brings to the table with GW2, the community at large will always be the liability here, and unless there are ways to improve the community, we're destined to repeat the same patterns.