I don't think SE will adopt the CREDD style system of account payment. Simple reason being that takes money from the development of the game. once you remove the need to give SE money for an account, profits decline, production slows, updates come fewer and further between. i think they would only introduce a system like that IF the game was starting to see a decline in population. If you really want a good measuring stick to see how SE will handle this game, look at the 10+yo FFXI. If a system like that were to be introduced, it would be there first.

Regardless, I don't really want it. To me, it sounds like one of those desperate please "Come Play Me! You can play for free if you can earn enough in game money!"