Ayume and Woundman, two of the few rogues to win arena tournaments, put up their suggestions on how to balance rogues on the Arena Junkies forums. Noteable is that both don't just suggest buffs but also nerfs where needed.
Ayume: What rogues need to be competitive
Ayume will participate on the Arena Junkies rogue podcast on Sunday, 30th of June, 10pm CET, 1pm PST along with Akaishuichi and Rzn on Hildegard's stream.
Woundman: Reasonable Rogue Changes
Cdew: Complete Resto Shaman Guide
Cdew made a Resto Shaman guide as video and you can watch it on his twitch.tv page.