There is already a total count of up- and downvotes, but please never add karma to Lemmy. We don’t want to deal with karma farmers and minimal karma requirements to post. I don’t care about the moderation issues because karma brought more harm than good. Please never add that bloody dreadful thing to Lemmy. I already saw a bunch of people supporting adding karma to Lemmy, which will turn Lemmy into a cheap Reddit clone and karma-farming hell. Please, never add karma to Lemmy. I beg you. No more karma hell.
Karma is largely useless. As others have said. Let an accounts posts stand for themselves. Not their general popularity. Just because someone is downvoted on the whole doesn’t mean they’re a troll. It just means their ideas are unpopular. But not necessarily wrong.