Patterns Path of Exile 2 exemplifies

Pattern	How PoE2 uses it
weapon-grants-skills	Weapon archetype directly grants base skills. Major break from PoE1's "any skill on any weapon."
one-death-map	One attempt per map node. Death ends the run; the node is consumed.
anti-screen-clear-combat	Combat deliberately slowed to restore per-encounter meaning. Telegraph + dodge + commit.
enemy-intent-telegraph	Bosses and elites visually telegraph attacks; the dodge roll is the response.
bonus-with-drawback	Inherited from PoE1's keystones; ascendancy commits also locked-in (no in-character respec).
currency-as-crafting	Inherited from PoE1; rebalanced (Chaos/Exalted swap roles).
vision-driven-iteration	Same philosophy as PoE1; new canvas, same Vision.
aspirational-crafting	Crafting bench gone, Recombinators in role of "next nerf candidate." Same cycle.
nested-progression-graph	Atlas as separate axis from character; weapon-set passives as tertiary axis.
parallel-products	PoE2 ships alongside PoE1 rather than replacing it. Two games, two audiences.