Warrior/Rogue/Mage is identical to UItima5, btw. It had "class" definitions/titles but basically boiled down to which of the three stats (Str/Dex/Int) was highest.
I kind of like the idea of removing clerics, and forcing magic-users into the healing role as necessary/appropriate. Some might be wizards, some might be herbalists/healers/doctors. Just like some fighters are Conan-types, some are knight-types, etc.
I think, though, if you address what "hit points" are and are not, you remove some of the issues with "healing." In my mind, a hit point is really more about stamina and endurance, your ability to dodge a blow and NOT get hit. Once you get hit, if you don't have armor, you're going to be taking wound(s). I mean, realistically, a guy whacks you with a sword really hard, and you're unarmored, he's going to take off a limb or at least cause a very serious, most likely fatal, bleeding wound.
Wearing some armor could absorb or block the blow. Maybe. Which was the whole reason people wore armor in the first place. Of course, there are other reasons to not wear armor (speed, weight, maneuverability).
Hamun Ry (Wiz 4)
Str 10 Agi 15 (+1) Sta 11 Per 11 Int 17 (+2) Luc 10 (Unholy House). Align: C. AC: 14. HP: 13. Melee +1, Ranged +2. Crit: d8, I. Save: Ref +5, Fort +3, Will +4.
Spells: 1: Choking Cloud, Comprehend Languages, Detect Magic (odd crystal growths), Magic Missile (mirror images), Runic Alphabet (Mortal) (ravenously hungry), Ventriloquism (rain of frogs)
2: Detect Invisible, Levitate (extremely difficult, d14), Mirror Image (20% chance to raise/lower luck by 1d3 points).
Equip: Ring of the Sand Djinn: +2 AC/saves, Invisibility for 1min/spellburn point, or unmake for great, unknown effect. Padded Armor, Longsword, Longbow, quiver w/20 steel-tipped arrows, 10 silver-tipped arrows, backpack, spellbook, quill and ink, sturdy parchment (10 sheets), 5 days rations, high leather boots, belt w/ belt pouch, gray robe, dark gray hooded cloak. Also carries 3 small mechanical toys: wind-up mouse, wooden puzzle cube, small jewelry box that plays a little tune.