The system includes a full levelling/exp system with a class-agnostic point-buy model (there are upgradeable classes that can give bonuses depending on level to stats, but class does not affect growth rates, and stats and skills can be upgraded using points gained on level-up), as well as partying with PvP (fighting other parties), and PvE (fighting AI enemies).
It also allows for a wide range of equipment possibilities, with skills being contained within the equipment, although which skills are known is intrinsic to the player, not the equipment. Effects must be defined in their own script in each item, but all attacks, classes, enemy properties and the like are defined by notecards.
Anyway, after all that waffle, if anyone's interested in helping out, please IM me in-world.