Currently the strategy with two weeks free is:
Unlimited access - limited time
I'm suggesting that in addition to two free weeks there be:
Limited access - unlimited time
Not all people are alike Mach. Some may find the two week restriction a bit daunting, if they have other committments in life that allow precious little free time. This would allow those people the opportunity to try out the main aspects of the game over a longer time. It boils down to whether or not hosting such an arena is likely to produce a suitable return. Maybe it won't. But it might be worth considering.
Best.
Maybe HTC already considered this and many other approaches to the trial period and the current configuration is what HTC felt worked best? I don’t think a limited arena with air spawns or other such things would be good for new customer retention. What HTC offers now is a game trial period. The potential customer gets exposure to the actual game with all it has to offer both good and bad. This allows the customer to make an informed choice.
Despite what our government would like us to believe, the US economy is in very poor shape and may collapse. People don’t have that extra fifteen bucks and if the do some can’t afford the internet connection. That might well be the true cause of customer fall off.