The Sentinel needs some resistance to constant CC especially as a melee class. Borrowing a page from the Guardian's playbook would be welcome. I think immunity to stuns after force leap and finishing the CD on force leap with saber throw would be a welcome change. This would provide a nice buff to Combat especially which relies on a 3 sec Precision window.
These reforms would be very useful in a boss fight where I need to leap out of a circle, or defend the healer from yet another trash mob.
Proposed Level 60 Set Bonuses:
2-Piece: Zealous Strike increases damage dealt by 2% for 15 seconds. Additionally, Force Leap / Charge grants immunity to stuns knock-backs and all CC for 5 sec.
4-Piece: Saber Throw finishes the cooldown on Force Leap. Additionally, activating Berserk or Zen increases movement speed by 15% and all damage dealt by 3% for 10 seconds.
6-Piece: Lowers the cool-down of Valorous Call by 30 seconds. Additionally, activating Ravage, Master Strike, Dual Saber Throw, or Twin Saber Throw will grant Weaponmaster's/Challenger's Critical Bonus making your next Vicious Throw, Furious Strike and Annihilate or Dispatch, Concentrated Slice and Merciless Slash critically hit. This effect can't occur more than once every minute.