I have recently encountered ICON and come to really like its dying mechanic. Each time a character is reduced to 0HP they become incapacitated, but stable, and gain a wound. Each wound reduces max hp by 25% and only goes away after an adventure (quest). A character can help an incapacitated character (rescuing) bringing them up and healing them to their new max HP, which after one wound would be 75% of max. Second time dropping to 0hp, a second would and new max hp of 50% of original.
It gives good longevity in individual encounters and forces caution in the longer run.
I have recently encountered ICON and come to really like its dying mechanic. Each time a character is reduced to 0HP they become incapacitated, but stable, and gain a wound. Each wound reduces max hp by 25% and only goes away after an adventure (quest). A character can help an incapacitated character (rescuing) bringing them up and healing them to their new max HP, which after one wound would be 75% of max. Second time dropping to 0hp, a second would and new max hp of 50% of original.
It gives good longevity in individual encounters and forces caution in the longer run.