@mistuhmarz
This game has always tried to be as minimal in UI as possible, so I wouldn't ever expect healthbars.
But giving us ways to tell how far we are into an encounter are always great. Ashen Lords have 3 phases, so you know where you're at at a given time.
It would be great to see even effects to the boss model to show us how much damage they've taken, such as the clothing being gradually torn, or the bones cracking, or even sound effect changes at given health levels. That would help the monotony of the Gold Hoarder.
For those wondering "Why?" I point to the Soulflame Captain. The worst boss fight ever in SoT. Never have I stopped fighting an enemy in any game to check the internet if they are bugged with infinite health. So more things to tell us the health of the opponent would help a lot (along with health nerfs for encounters like the Soulflame Captain).