Right now there’s a PvP Talent:
Thief’s Bargain: The cooldowns of Shadow Blades, Vanish, and Feint are reduced by 20%, but using one reduces your damage by 10% for 6 sec.
If it was moved to a spec. tree talent, would you take it?
What about if it was 33.33% CDR for 16.6% less damage? Aka making Shadow Blades a one minute window for better trinket timing and a 30/60 seconds profile.