The Lucas idea that crime bosses fill the power vacuum left by the empire is a really good one. I could take or leave everything else, but that would at least be a unique enemy that isn’t just more of the empire (though some stories with the imperial remnant are cool too,) and it makes a lot of logical sense.
I think some of that bled into The Mandalorian, at least in season 1. It starts with all frontier bounty hunting stuff because this is the aftermath of the empire’s defeat, though fragments of it are still there.