I think if they release more a bit more of the content that you get on the F2P server to the P2P server would attract more people to play it since you just need to put some effort to get it.
Thanks
When you think about it, there really isn't all that much such content. In all of it some is even detrimental to the gameplay and is best forgotten.
Out of the portion that isn't, they are adding it slowly over time:
- Before 6.0 there wasn't Animality.
- Before 7.0 there was no way to get all the racials for your class.
- Before arena was added there was no elixirs.
I probably missed some, don't remember everything that changed since launch.
They are also developing a system that awards a random Prophetic card legendary costume every time you subscribe for 3 months at once.