Endless conquest is launching sometime at the end of the month.
Endless Conquest is a fp2 mode where players can sign up for a new account and play as one of the available classes(most underused) and play them forever and for free.
You cannot pause rps or exp when playing for free, but you can max out your end game realm points and collect all of the gear you can.
There are some drawbacks, however. You cannot use master levels or champion levels. Some endgame gear is off limits.