I addressed this some time ago, but we can trade our masks for care, healing and such. There's a chance that we might get taken advantage of, of course, but as long as we execute properly our healing should come along smoothly, and as mask trading is something we wish to do regardless, it merely serves as introduction to a mechanic.
In comparison Angel's initial disposition is much harsher and harder to deal with condition. How much will we have to plan ahead, to avoid our character rushing headlong in mortal danger despite our wishes? How much are we going to wrestle our character around against his own genuine wishes, instead of playing alongside them? It just sounds very tiring.