I played a Warrior during Heavensward, lol. I'm also aware of the
changes to IB and SP. The IB/SP change isn't super significant tbh. However, we also did get Rampart, which is a step up from Foresight.
I would say if a Warrior stayed in Defiance (which seems to be what SE wants), the survivability difference between then and now is not that different. However, in Deliverance, Fell Cleave and Decimate did make Bloodbath a very powerful CD.
I mean you still have Equilibrium, Thrill of Battle, Vengeance, Raw Intuition, Inner Beast. All very powerful CDs.