I'm increasingly convinced that general reputation points should just go. They're not about reputation at all. They're about making social media more addictive.
Large positive scores are meaningless without knowing where they came from. And even then, they can be farmed. Same for large negative ones.
What do people actually use the score for? To determine whether some else is worth engaging with? 9 times out of 10, you can tell just from the post - people acting in bad faith are pretty easy to spot. If someone's being a prick, they can be ignored even if they're usually a level headed and nice person 99% of the time. If someone's JAQing off, or sea-lioning, they'll make it known in short order.
A number doesn't tell us what to do about it.
Breakdowns by group is a good idea. Maybe expand that idea to give a count of posts and comments by group, too. Not necessarily viewable by everyone, but at least by mods and admins.