(edited by Silfacris.2465)
Guardian DPS/Support (more PVP less PVE)
Lets start off with build/weapon suggestions. Concerning the weapons, you may want to think of using scepter with torch over using a hammer because it allows you to have some range in the build for when you need it. The hammer does have lots of CC but when it comes to PvP/WvW it is really hard to land any of the CC with it on other players because the cast times take a long time to go off and others can see it coming from a long ways off. If you do decide to go double 1-handers, consider taking right hand strength in radiance, even though it is only 15% crit instead of the 20% from fury, it stacks with the fury that you might receive from other players as well as from “Feel My Wrath.”
For utilities all shouts is a helpful build if you don’t have access to DH, and some of the best you can do without it (Burn Guard doesn’t use DH and does lots of damage but it doesn’t have much support). Of the shouts I’d use “Stand Your Ground” over using “Save Yourselves”. This is because stability is awesome and “Save Yourselves” is normally a death sentence. If you’re not finding “Stand Your Ground” to your liking than taking Purging Flames is a good substitute since it removes conditions and deals damage. Taking Writ of Persistence over Pure of Voice is a good idea if you find you have way to much condi removal or if there are no condis being thrown around.
For traits, Right Hand Strength is better than Inner Fire but the rest of Radiance looks great. In honor, Pure of Heart is a good trait for defensive support, while Empowering Might lets you give off might for offensive support. If your friends are relatively good at staying alive without needing that heal then taking Empowering will help kill stuff quicker.
In virtures, Indomitable Courage is a better trait to take than Battle Presence because it lets you break stuns off of other players (few things can do this), while giving them stability to be able to act just after you use it. If you end up taking Purging Flames (as mentioned earlier), take Master of Concentration over Unscathed in Virtues.
Most of this is from a PvE perspective. In sPvP it is better to take a damage build since Guardian doesn’t have to best support builds in PvP compared to other classes. For WvW, I sadly don’t play it.