making sure it has nothing to do with blockland
Actually a pretty good quality to go by. Other than that;
+
Productive people
Creative outlets
Purpose/Organized
Good mods/admins
Recurring nice people
People who are good at holding conversation
-
Toxic people (a fairly large category which encompasses a lot of people. You know, like bloated ego or people who spew political jargon all day etc)
Most people under 16
Pointlessly large or over sized
"Rank" systems implemented by a bot
Bad administration
Just generally obvious traits to follow, good servers can be hard to find and sometimes I just don't click with the people anyways, but they're 100% out there. Even if you're to hang out in a less than optimal server for awhile you can meet some nice people and then move or make another server to go to with them or spend more time there. It's happened to me a couple times and it's quite nice to find more like minded people that way on discord.