Thank you for the very detailed and informative thread. Returned to Vana'diel last night, and Abyssea seems so complex, but now I think im ready to dive in.
Oh and just FYI, Steam has the entire lot on sale at the moment for €11.99, including all 3 Abyssea expansions. You can buy the single unique code and add it to any exisiting account, and it will top up your expansions all the way. For example, if you have only RotZ on your current account, adding the Steam Ultimate Abyssea Edition Code will add Chains of Promathia, ToAU, WotG, Moogle Kupo d'etat, Shantotto Ascension and all 3 Abysseas.
However if you don't have a PoL account, it will give you everything, and a special event hat too! :D
Just added it to my recently reactivated account after buying the ultimate edition code just now, and all worked, added the 3 expansions and gave me the hat code, so I can 100% confirm this works, and saves you roughly €25 (€65 if you don't have any expansions).
Edited, Jul 13th 2012 7:34am by clarkeyboy