I respect each of the changes, but I fear the subscription idea will be the end of the road for a lot of the current users. A realistic expectation is that the managers that currently have All-Star accounts will probably pay the subscription and I suppose this will be the starting point. From then on, problems may arise.
First of all, the idea of a subscription means that many users will not afford it. What buys an icecream in the US or Sweden will feel far more costly in Eastern Europe, for example. Then there is a difference between choosing to contribute (through a donation or an All-Star account) and having to contribute. Psychologically it is easier to attract paying customers through the first option.
The biggest problem is that without a lot of marketing, the game will fail to attract a lot of paying users, so most worlds will be scarcely populated and the game will not be attractive even to those who will choose to pay for a few months. It will not have a community (like it was promising to do) but customers. I may be a sceptic, but I fail to see how new (paying) users will arive in large numbers.