I feel like I’m stepping into a beehive or a snake’s nest by posting here, but I feel like I just need to say this.
Just because something isn’t explicitly forbidden does not mean that it’s the right thing to do. It’s about the spirit of the game and being a good sport. There is a difference between measuring your strength against the enemy’s, protecting strategic points and using tactics to gain the upper hand, and keeping a small group of players from completing a jumping puzzle and taunting them for the sole purpose of feasting on their grief. It’s pure schadenfreude, and it hurts the gameplay experience for others in a different way than losing a supply camp.
Having said that, I know that there’s absolutely nothing neither we nor arenanet can do about this, since it’s, as it has been pointed out, part of the pvp setting, and the ill intent is hard to prove, it’s purely subjective. They’re just using their skills and traits against their enemy. It’s not forbidden, that’s the point of WvW. Also, there’s no way for us or anet to know if the story posted by the OP is true. Though I haven’t seen the name of the guild (it got censored) I assume it was rather offensive, from reading this thread. Changing that would be the only legit thing anet can do, without taking out a part of the game that some players enjoy.
The only advice I have for the OP is to come back at a different time of day, or maybe even when the servers have changed, if you can’t muster an army to give those guys a few good spankings until they get bored and give up. I would have felt the same way you do.
Also, about “feelings are irrelevant”. They’re not. You play this game for fun, and that’s a feeling. Feelings are the very point of playing a game. A feeling of accomplishment, of fun, of pride, what have you. Rules of conduct are in place for that too. Why do you think there’s a “report verbal abuse” option? It is most definitely NOT the point of GW2 to inflict maximum pain on an individual, no matter the means, that’s nothing but bullying. But as I said, this is WvW, and proving any ill intent behind a player kill is impossible, and even then it would probably not be an offense. Only the guild name is a possible offense (which is now censored, so I can’t say if it actually is).