I talk about skill-based XP progression, where games give their players XP based on their use of skills. I discuss the problems this method can cause that you will need to either fix or dismiss as a non-issue for your game. This progression can also apply to perks, traits, backgrounds, or anything about the player build that affects the game.

Videos I reference:
How To Give Experience Points:    • How To Give Experience Points  
Class-based vs. Skill-based RPGs:    • Class-based vs. Skill-based RPGs  
Procedural vs. Handmade Content:    • Procedural vs. Handmade Content  
Learning Lessons From Failure:    • Learning Lessons From Failure