I run the following build on my Guardian, running GS/Sword & Whatever:
http://www.guildhead.com/skill-calc#mMcz0oczMmRaLmmRaLmaaaGGVoVoaMa8kii707kii7khy7070z7kNc70V7owY70m8ofy
It’s designed so that anyone that hits me suffers for it and I can keep most targets blinded and/or on fire near constantly while clearing conditions from myself and my group. It’s made an effective “tanking” build so far, up through CoF, but I’ve yet to try it in the end-game content past that.