The grey goo armor can currently gain two heal abilities:
One heals you up to 50 HP using grey goo vials in your inventory, 1/hour, and a 24 hour -2 armor debuff.
The other heals you 50% or 100% of your HP, and costs stored body fluids - which are trivial to get late in the game, making the first option essentially worthless, especially since the first option also requires you to drag stuff around with you, costing you an inventory slot.
There's also the Augment-Weave Armor, which is… honestly, probably broken, because it allows you to recover a level of soreness by simply resting for 5 minutes, which doesn't quite seem right to me, but does set a precedent.
It would be neat if, when the goo armor has both of these heal abilities, the "health for goo vials" would instead (or in addition) heal a level of soreness.
That way, I wouldn't have to carry an Augment-Weave Armor with me wherever I go.