Upsides: People without a legal Minecraft account can join the server
Downside: Authentication is disabled which causes:
- People can impersonate other players e.g. OPs and have their permissions (Fixable with a auth plugin -> Not a good and proper solution, but it should fix the basic problem)
- Banning does not really work as people can just change their name and IP to join the server again
- Skins do not work (Fixable with a plugin)
- Issues with playerdata when moving worlds between servers / clients
Thank you, I think I'll just stick to premium.