Power should change what is possible.
Progression 2d6 solves the layer power-growth creators keep rebuilding: Tier gaps the AI GM cannot luck through, narrow Techniques that punch above their Tier without breaking the ladder, Paths with authored breakthroughs, resources and mastery, plus Threat and training state that advances only when play earns it. Clone the system, replace the Tier ladder and power source, then write your Paths and Techniques. Use it for cultivation, tower and isekai, academy awakenings, monster evolution, superhero growth, and other campaigns where becoming stronger unlocks new categories of action.
Fastest clone path: edit the existing Progression Core System Profile in place; replace the Tier ladder and resources; write two or three Paths; give each Path a small set of signature Techniques; then replace the Trial Platform with a Game Start that puts a Tier gap on screen. Keep the demo until your own opening proves Scale, Reach, and earned leverage.