like ZLevels or like the one I am currently using called Skill Tree to have where people have to earn XP or Playtime before they can earn extra slots in their Backpack? Or even earn a Backpack? Not sure there is even a way but wanted to throw a shot in the dark. Any insight would be greatly appreciated!

This plugin does not offer direct integration with any skill, XP or playtime plugins, but such plugins often let you automatically assign permissions to players that have certain skills or playtime, which some servers use to grant increased backpack capacity.

WhiteThunder

This plugin does not offer direct integration with any skill, XP or playtime plugins, but such plugins often let you automatically assign permissions to players that have certain skills or playtime, which some servers use to grant increased backpack capacity.

Insightful. Appreciate that Thunder. Thanks!