Possibly, do already have a decent amount of healing items. Red potion cures an assortment of side effects (bleeding, bites, etc), gilded aegis does straight-up healing plus pain, scroll of overgrowth (I think that was the name) does healing plus other effects.
One other unfinished idea I had: something tying the four artifacts together. For example, the cursed sword is supposed to be used in a summoning ritual, but its current form (and why there's a possessed sigil-wielding priest in the floating temple) was due to sabotage. The ring of the fallen angel can be found in the location associated with the guys implied to have given the chalice cult the cursed sword, and it has some evil-dispelling/protection effects.