Should Lemmy have Karma?

Another Reddit refugee here,

I think we're all familiar with the Karma system on Reddit. Do you think Lemmy should have something similar? Because I can see cases for and against it.

For: a way to tracking quality contributions by a user, quantifying reputation. Useful to keep new accounts from spamming communities.

Against: Often not a useful metric, can be botted or otherwise unearned (see u/spez), maybe we should have something else?

What do you all think?