Making money - like in seaport. No progresses for game, for content or other failures. No new options in playing.
Really, my new electri liner does not carry 140M gold but now 320M gold, does not cost 390 x2 gem but maybe 700 gem.
And ? So new contents will not force "send 20mill gravel", they say "send 45mil gravel". The only thing that changes is the amount of real money you will invest.
Well, you can see where the professionals in PF company are sitting: in marketing, not at developer site ;-)
Maybe I post a secret, but why not ......
there will be no better chance for new players to get more or better progresses than now, because new features are available for everyone being willing to invest real cash.
When comes new material ? If not enough player buy the new stuff - or - if enough had bought to force one more "new-buy-party" ? ....