It dawns on me that, at an uninformed glance, you could accomplish most of what you're looking for simply by playing the actual reborn reincarnation of a distant hero without dabbling in the P-word. This eliminates all of the hoops and challenges, and while it removes the Primal word from your template, it makes it a lot less messy to work into functional canon and, more importantly from a roleplay perspective, other people's head-canons and game world.
Golden rule as ever is to write what you like to write. We're all playing pretend here anyway.
Golden rule as ever is to write what you like to write. We're all playing pretend here anyway.