Dont nugen games have the most agency? If you define agency as having many choices in how you tackle campaigns, then nugen pokemon games have the most agency. They have bigger regional dexes compared to older titles and the gym leader sequence breaking in older titles were clearly unintentional oversights (that also dont add anything since theyre not scaled or play out differently like in other games). Flagmarkers, roadblocks and cutscenes dont take away agency.