I kinda like it ...
I mean i certainly DO appreciate that game now show us clearly that our character is protected beyond his regular hit point pool.
(Wich is quite important when you play HP<50% build.

)
And Heart was allways icon for HP in my opinion ... i would not mind Shield tho.
What exactly bother you anyway?
The heart?
Its position?
Its size?
Those beams?
All of the abowe?

And what would you like to see instead of that?