My macro for 5.2 Subtlety is a combination of various needs/requirements, and is of course open for new ideas and suggestions 
/cast [nostealth,nocombat]Stealth
/cast [stealth]Cheap Shot
/castsequence reset=0.3 0,0,0,0,Eviscerate
/castsequence reset=0.3 0,0,0,Slice and Dice
/castsequence reset=0.3 0,0,Backstab
/castsequence reset=0.3 0,Hemorrhage
/castsequence reset=0.3 Rupture
/castsequence [mod]Cloak of Shadows;reset=target/120 Backstab,Hemorrhage,Slice and Dice
/cast [combat]Shadow Blades
/cast [combat]Shiv
/cast [combat]Evasion
/targetenemy [noharm][dead]