My level 75 support guardian is currently running this (without the strength in numbers).
http://gw2skills.net/editor/?fUQQJAWSlcg6CHFSLEf4ES2DRakQQsHYUGtRXFSIA;TABgzymEMJZS1kiJquMeJ8ymjrLZOrPGfsB51A
I use almost exclusively 2 handed weapons (always staff and either GS or hammer depending on the situation) because there is always something to be doing with them supportwise anyway, but a scepter with a shield is also a good choice.
Currently I have both my 30 point traits set as such to test the bug fixed Battle Presence and the fact that allies now get the boost from absolute resolution to see if this is a viable amount of overtime healing in a large group where it will always be hitting 5 allies.
My healing is usually healing breeze because it is the supporters heal due to the large healing it can do to allies as well.
My 7 skill is always wall of reflection and I use it whenever its off cooldown and I am in combat.
My 8 skills is usually Retreat! because long term sprint, more in combat mobility and a free block for 5 people and myself can be huge.
Also my number 9 skill changes depending on the situation. The most common skills are sanctuary (2 party organized groups), save yourself! (zerg vs zerg where my own survival has been an issue, also occasionally use this as a second long sprint to get back to an important objective in a hurry after death), hold the line(zerg vs zerg when I know 5 allies will always get it), hallowed ground (when we have multiple rams on an enemy door with a cata behind it).
I am also currently weighing the options between clerics and soldiers with this build, but leaning towards clerics due to the coefficients on healing breeze, empower, selfless daring and orb of light.
As far as traits go I as far as I am concerned Wall of Reflection is the best ability the guardian has so Master of Consecrations is a must, also I love consecrated ground because the ability to cast a all at 900 range means I can put it up on top of enemy keep walls and prevent them from firing down at us. My 30 point virtues trait is currently absolute resolution for testing but Indomitable courage is also a good choice because stability is one of the most underrated things in this game.
As for Honor I often use superior aria because many times I am using 2 shouts. Sometimes i change it out for protective reviver. I used to like resolute healer, but have recently decided its just too short for its cool down. Because I use almost exclusively 2 handed weapons Two Handed Mastery is a must, honestly just the increase in support capacity it brings to the staff makes it almost a must. Currently my 30 point trait in honor is testing battle presence, and fixed it make still be better than other options though having superior aria and protective reviver wouldn't be a bad choice either.
Lastly with only 10 points left and only 3 options the choice is really down to symbol of wrath at 25% and the guardians falling trait(a great choice for any class in WvW) or an aegis at 50% and the area 90 toughness boost for myself and 5 allies. At the end I decided the extra survival or the aegis and +190 self-toughness was a better choice.
» Edited on: 2013-02-04 06:27:02