How would you improve a Dark Souls boss using another boss from the series as a template?

It's no secret that FromSoft have recycled and remixed a few enemies and bosses across the series (see the Asylum Demon to Erdtree Avatar lineage).

So if you had to reinterprete a DS boss using the design of another boss from the series (+ Bloodborne, Sekiro, Elden Ring), which would you choose?

I think that Amygdala from Bloodborne could provide a better template for the Bed of Chaos. It's one of the best examples of a giant enemy that doesn't completely mess with the camera, has a good range of fair attacks (you could add in some fire attacks for chaos witch flavouring), and it even looks like a tree to boot.

Edit: some more of the top of my head -

Gwyndolin - Renalla

Centipede Demon - Guardian Ape (phase 2)

Seath - Sinh or Midir