Atzoatl, incursion: choosing seemingly bad architect

"Kill this architect to change this room to Pools of Restoration."
"Heals monsters in the Temple."

Has it any benefit? (To have monsters healed, i.e. life regeneration.)

For example, items dropped? Does the modifiers (on dropped items) depend on the monsters' modifiers? (Possibly, do the items have life regen, if the monsters have life regen?)

It adds some quantity and rarity to items dropped throughout the temple (more on higher room tier) and, on level 3, adds a chest with a couple of items with signature mod (health/regen) and, possibly, temple exclusive unique.

Incursion is one of the first mechanics, and the majority of the rewards have fallen off hard in terms of worth.

Only rooms that matter:

S tier:
Locus

A Tier:
Doryanis

B Tier:
Immortality
Apex
Shrine of empowerment - all tiers

C Tier:
Apex of Ascension