I am reminded of the BoED (Book of Exalted Deeds) from the old 3.0/3.5 D&D days. In it, you basically had characters who were super good. They not only had to aspire to goodness but they had to refrain from many of the easy solutions more traditional games revolved around (i.e. hack and slash, murder hoboing, etc.).
This book often had to grant bonuses and add mechanics based on living an exalted lifestyle, such as being nonviolent or being ascetic (refraining from worldly possessions). Such mechanics might be doable in a game like CoE, but it would be difficult for a player to go this route, particularly if their "special" nature attracted unwanted attention.
I would give these two examples to counter the darker lich and vampire already slated for inclusion in CoE: the ascetic and the saint.
The Ascetic
The ascetic is in direct opposition of the lich, for while the lich delves into dark tomes and secrets for power and to unlock immortality, the ascetic explores the mysteries of the world in search of the light of knowledge to dispel the shadow of ignorance. While the lich seeks immortality and hoards his soul in a phylactery, coveting and protecting it against all, an ascetic eschews all but the most basic of material goods, often living on the kindness of the community or the bounty of the land.
While a lich continues to age beyond the physical limits of their earthly body, an ascetic retains the vim and vigor of youth far beyond their years. While an ascetic understands they will eventually die, they do not fear death like their lich counterparts. Rather, they embrace the continuous cycle of reincarnation, knowing they will become spiritually stronger due to their self-discipline and abstention from earthly indulgences.
While many can follow the path of the ascetic, even for personal gain and selfish reasons, the path only reveals its true potential to those who foster good in the world in addition to their selfless asceticism. When a person follows the path of goodness and kindness, they may become privy to the sacred vows necessary to pursue the path of the ascetic, forswearing material goods and taking a vow of poverty.
Benefits of the Ascetic
- Your fatigue recovers naturally as if you were in a home, regardless of your current location.
- You cannot starve to death or die from dehydration.
- You are resistant to the effects of extreme environmental cold and heat.
- Your physical and mental attributes do not decrease as you age, although your mental and social attributes still increase.
- You do not appear to physically age beyond the age category you obtained enlightenment at (for reincarnated ascetics, this may be quite young depending on if you pursue the ascetic lifestyle again after being reincarnated).
The Saint
The saint is counterpoised to the vampire. While the vampire feeds on the spiritual essence of others in order to prolong its unnatural life, the saint freely spends their own spiritual essence to do good in the world. Through the use of blessings, a saint can heal the sick, protect the innocent, restore those who recently suffered grievous wounds, and quell the profane. However, such a path quickly drains a person of their own spirit. With the knowledge their life is short and they will more than likely fall at the hands of some vile force, a saint performs their works with fervor and a dedication bordering on the zealous.
While a vampire seeks out victims to drain of their spiritual essence, a saint seeks out people to help. While a force of good in the world, a saint is free to cast their blessings on the deserving and those whose hearts are as dark as can be. A saint can only grant one blessing a day and doing so counts as having experienced spirit loss from grievous wounds. Due to the high profile of such characters, this means their lives are often considerably short unless they work to hide themselves and their unnatural abilities.
While sainthood is a seemingly simple path towards easy power, becoming a saint is no easy task and only those of a truly pure heart and dedicated to the forces of good can achieve such heights. A saint's soul must often spend several lifetimes free of evil and sin before it is considered pure enough to wield the divine powers of the saint, for only the blessings spoken by the true of heart and the purest of soul will be heard and answered.
Blessings of the Saint
Only one blessing can be made per day, and each such blessing counts as grievous wounds when determining the spirit loss a saint takes when using his blessings.
- Healing: The saint heals another character of all poisons, diseases, and lingering injuries affecting them.
- Protection: The saint protects another character, reducing the chance of being affected by a poison, contracting a disease, or being critically injured by attacks for a short period.
- Life: The saint restores the spirit loss suffered by another character due to grievous wounds, so long as that loss has occurred in the last 24 hours.
- Smite Evil: The saint gains a bonus on damage and critical hits against a single target that is "evil" (evil will be subject to game mechanics such as being a player killer, being undead, or some other mechanically viable evil that can be discerned through gameplay). If this ability is used against a non-evil character or creature, the spirit loss remains and the ability is wasted.
Anyway, those are just a couple ideas.