Plugin name: Server Assistant
DirectLeaks link: https://mcleaks.us/resources/server-assistant-automatic-issue-reporter-and-handler-report-errors-lag-and-crashes-with-cause.821/
Version: 1.0.9
What is wrong: Plugin it's not loading: https://pastebin.com/xmz07qSQ
Plugin name: RestrictedCreative
Spigot link: https://www.spigotmc.org/resources/restrictedcreative.42790/
Version: 1.6.4
Why do you want it: Because it's the single plugin of this type that's updated for 1.12 and it's features seems to work.
Plugin name: MySQL Player Data Bridge
Spigot link: https://www.spigotmc.org/resources/mysql-player-data-bridge.8117/
Version: 3.18.1
Why do you want it: Because it can allow syncronizing data between many survival servers.
Plugin name: VillagerFight // Unique Event/Competition/Betting Plugin
Spigot link: https://www.spigotmc.org/resources/33-sale-villagerfight-unique-event-competition-betting-plugin.33361/updates
Version: 2.2.11
Why do you want it: Because is a unique ideea and players can get attracted by this...