Suggestion 1 : add a tradeskill process for Dusk/Dawn of the Xan, transforming it into "Hopeful Dawn of the Xan" / "Bitter Dusk of the Xan" [working titles], removing Sneak Attack, adding Brawl.
Suggestion 2 : add a tradeskill process (screwdriver) for any Dusk/Dawn of the Xan, which cycles through several colors.
Suggestion 3 : remove the "hiding" requirement from Sneak Attack (and Aimed Shot) in PvM.