Is this possible for Guild Wars 2 to have a play free?

Now Guild Wars 2 do not have a function of Free-to-Play option, as many players have reflected this question in a forum that Guild Wars 2 should set a page especial for players to have a play free. I think this is a good way for the company to offer such a service, because players can do their decisions whether to pay for the game. For these players who interested game, no doubt that they will spend money on buying the game and Guild Wars 2 gold . While, some players may not satisfy with the game, they won't waste money any more.