Here's an idea that I thought of that would be nice for premium players, the ability to trial run p2p adventure packs to see if they feel its worth getting or not. It would work something like a pass, except unlike a pass, the individual who is purchasing the trial doesn't need to own the pack. Furthermore, the trial could be limited to only running in normal or perhaps even just casual. The trial price should be very low. Turbine would want to encourage people to try before they buy as they would make more money that way.