ngl I kinda like multiple phase fights when they have differing abilities in their separate phases and when it isnt an obvious thing coming
like, if the fight is long enough and tough enough that you think "finally, I have beaten the boss. I have used all of my resources and it was a close fight but I am finally victorio-... OH FUCK I HAVE NO HEALS LEFT" and then the feeling of getting good enough at the first phase to where you have lots of resources left for the eventual second one
but the "yeah i just healed my full health bar but its the same fight 2x" shit is just lazy