If “HP or not HP” failed, this proposal does nothing.

In the sub-rule called “health” in the Character Sheets rule, reword the text

Each Adventurer also has a Max Health.  An Adventurer’s Max Health is always equal to 8 plus twice that Adventurer’s Bravery skill.

to read

Each Adventurer also has a Max Health.  An Adventurer’s Max Health starts equal to 8 plus twice that Adventurer’s Bravery skill. The max HP can be modified items. Modifications are commutative. An adventurer’s max HP shall be recalculated any time a modification goes into effect or out of effect.