As kerbals grow old, their health should be affected negatively. It will encourage periodical recruitment of new astronauts and will somewhat balance the benefits of experienced crew members. In a way, it is already achieved with accumulated radiation dose, but ageing should take place whether the kerbal is on a mission or not.
Options:
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MaxHP is reduced steadily based on the kerbal's age. Pros: easy to implement, transparent, predictable. Cons: boring.
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MaxHP reduction rate will be randomized and can change over time. E.g., a kerbal can have a good health for the first 10 years of service, but then their health will start quickly deteriorating. It can be a result of random events. Pros: more challenging, gives one more dimension to gameplay (you'll have to select the kerbals taking their ageing rate into consideration). Cons: may look unjust, too much micromanagement.
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As the kerbal ages, a chance is growing of negative health events (conditions) affecting him/her. E.g., they can develop diabetes or cancer, which will signifacntly reduce their maxHP or other characteristics. Pros: the deepest and most realistic option. Cons: may look unjust, requires too much design for questionable use, harder to balance.
As kerbals grow old, their health should be affected negatively. It will encourage periodical recruitment of new astronauts and will somewhat balance the benefits of experienced crew members. In a way, it is already achieved with accumulated radiation dose, but ageing should take place whether the kerbal is on a mission or not.
Options:
MaxHP is reduced steadily based on the kerbal's age. Pros: easy to implement, transparent, predictable. Cons: boring.
MaxHP reduction rate will be randomized and can change over time. E.g., a kerbal can have a good health for the first 10 years of service, but then their health will start quickly deteriorating. It can be a result of random events. Pros: more challenging, gives one more dimension to gameplay (you'll have to select the kerbals taking their ageing rate into consideration). Cons: may look unjust, too much micromanagement.
As the kerbal ages, a chance is growing of negative health events (conditions) affecting him/her. E.g., they can develop diabetes or cancer, which will signifacntly reduce their maxHP or other characteristics. Pros: the deepest and most realistic option. Cons: may look unjust, requires too much design for questionable use, harder to balance.