What are some good tips to make sure that you get the best possible retirement value? What should you definitely NOT do? Do you trade in artifacts or keep them? Do you want to try to sell promo items if they have a low or non-existent assigned value? Do the credits from promo items you DO trade in count? And so on... Maybe you don't have to do anything at all - which would, under the right circumstances, be the ideal situation for all parties (meaning you'd feel confident you're going to get a properly calculated return regardless of what you do or don't do, and IRE doesn't have to deal with the guy who wants to know if he can deposit all of these pennies, and also, what about these Canadian pennies).
At some point, I am sure it will partly come down to how down in the weeds you want to go, and how much effort you're willing to put in for X return, but I'd love to have some sort of understanding of how the process works (I definitely don't). Even if I don't end up doing it, I'd love to hear from players who went through the process and feel like they learned useful things about how it works.