Legacy Piece Progression Systems Explained

This page is the map of those systems in one place — each quoted from its own Trello card. Levels and ranks have their own page at levelling, and Haki is covered under Haki.

Trello board pulled:

Enhancement

Spec Ascension

Prestige

Mastery

Bounty System (PvP)

Fishing & Mining

Gems (Sockets)

Inventory

Which system to feed first

Enhancement first — it is the cheapest multiplier on damage you already have, and several style unlocks require an enhanced prerequisite (Dio Over Heaven wants The World at +10). Spec Ascension second, once you have settled on an ability you intend to keep. Gems third, because they are the layer you can re-roll cheaply later. Prestige last, and deliberately: it resets progression, so do it when the permanent buffs outweigh the levels you give back.