I don't believe that every profession should be able to heal themselves fully or even really past a certain point unless they have the skills, for example, everyone would get a basic heal, perhaps, that with a Hypospray which would heal you for lets say 20%, the next, upgraded skill might allow you to use a dermal regenerator which would be a 30% heal, etc. But no one should be able to out heal the Doctors or Medics, without certain skill certifications.