So, what is the underlying problem? So far as I know, the Billions entered the game as an exploit / glitch.
How else came so much money into the game? Through questing?
You mean, for example in Germany?
And yes, a currency reform is a patch, as in the rl world. But sometimes it is simply necessary
Main effect would be, to raise the worth of the "normal" earned credits (via questing). The intention is not to "punish" the rich, but to give all other players the opportunity to earn money.