Normal healing is still pretty potent compared with the real world, particularly with the Long Term Care application of the Healing skill.
Regardless, you could possibly:
- Allow Healing as a class skill for most if not all classes.
- Allow the hit points recovered from Long Term Care be tripled rather than doubled on a DC:20
- Potions can provide +1 hit point per level of the recipient as though from a full nights rest in addition to the Xd8 hp normally recovered.
Vitality and Wounds is pretty good; though it can easily be a game spoiler to suffer a powerful Critical Hit. Another option is the modified Star Wars system that has wound categories with gradually accumulating penalties to all rolls as the character becomes damaged.