As a thought experiment, your idea is interesting!
I see a few problems though. This wouldn't work for just any karma-based site. For example, on StackOverflow where there are good "canonical" answers to tech problems, and these get heavily upvoted (because they are useful), having them removed and later rephrased (possibly incorrectly) by a new user would be detrimental. So any system where "good" posts are archived and referenced wouldn't benefit from this.
Even when there are no canonical/permanent answers, the thought that every "good" post you make takes you nearer to account deletion is not exactly enticing. Why not simply get rid of points and make all posts ephemeral, kind of like Instagram stories? What good do points even do in a system where your account and posts will get inevitably deleted?
Also, wouldn't mediocre/bad accounts stick longer than "good" accounts, making the whole system worse? I don't mean terrible or troll accounts -- I understand the point system would still be used to ban or hide them -- but mediocre accounts which post mediocre/bad posts. Wouldn't they dominate in this kind of system?
I see a few problems though. This wouldn't work for just any karma-based site. For example, on StackOverflow where there are good "canonical" answers to tech problems, and these get heavily upvoted (because they are useful), having them removed and later rephrased (possibly incorrectly) by a new user would be detrimental. So any system where "good" posts are archived and referenced wouldn't benefit from this.
Even when there are no canonical/permanent answers, the thought that every "good" post you make takes you nearer to account deletion is not exactly enticing. Why not simply get rid of points and make all posts ephemeral, kind of like Instagram stories? What good do points even do in a system where your account and posts will get inevitably deleted?
Also, wouldn't mediocre/bad accounts stick longer than "good" accounts, making the whole system worse? I don't mean terrible or troll accounts -- I understand the point system would still be used to ban or hide them -- but mediocre accounts which post mediocre/bad posts. Wouldn't they dominate in this kind of system?