NOTE: This post is based on an early 5.4 PTR beta build and is no longer accurate. For more accurate T16 tier reccomendations refer to my 5.4 Rogue Changes Guide or better yet ShadowCraft.
2pc increases the value of crit somewhat but it still appears behind haste and mastery in value.
Set bonus appears to have no impact on EP values.
UPDATE: Looks like I misinterpreted the combat 2pc, it doesn’t change the value that much but updated.
UPDATE 2: Added subtlety numbers, better modeling of some set set bonuses and bug fixes.
UPDATE 3: Updated numbers based on testing. Fixed a bug in combat 2pc and assassination 4pc that was substantially undervaluing both.
UPDATE 4: Sorry for the delay, trying to reconcile some differences between my numbers and Pins’ numbers. Updated to account for the latest PTR build. Also fixed a bug that was doubling the value of assassination 4pc. Also removing the assumptions because at this point the behavior of these bonuses has been pretty well tested.
1) Combat 2pc is about 1000EP better.
2) Assassination 2pc is about 2000EP worse and no longer makes crit the best stat.
3) Sub 2pc is about 1000EP worse.
4) Sub 4pc is baout 4000EP worse.